ADC Telecommunications CX-DS3-58G Point to Point DSX3 / IP Transceiver User Manual interWave WaveNet Link CX

ADC Telecommunications Inc. Point to Point DSX3 / IP Transceiver interWave WaveNet Link CX

user manual

(FCC Certified Version)Part Number 100757-0015/02 Version AWaveNet Link CX User Manual
iiThe products described in this document are products of interWAVE Communications, Inc. or its licensers. No part of this document may be photocopied, reproduced, translated, transferred, disclosed or otherwise provided to third parties without the prior written consent of an officer of interWAVE Communications, Inc. This document applies to the interWAVE Communications, Inc. release of the WaveNet Link product line and to all subsequent versions and releases of the hardware or software unless otherwise indicated in a new version or an update package for this edition.Publications requests should be addressed to your local sales support office.interWAVE Communications, Inc. reserves the right to make changes to any products described herein at any time without notice. interWAVE Communications, Inc. does not assume any responsibility or liability arising out of the application or use of any product described herein, except as expressly agreed to in writing by interWAVE Communications, Inc. nor does the purchase or use of a product from interWAVE Communica-tions, Inc. convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of interWAVE Communications, Inc. or third parties.Use, duplication, or disclosure by the U.S. Government is subject to restrictions of FAR 52.227-14 (g) (2) (6/87) and FAR 52.227-19 (6/87), or DFAR 252.227-7015 (b) (6/95) and DFAR 227.7202-3 (a).The software described in this document is furnished under a license agreement or nondisclosure agreement. The software may be used or copied only in accordance with the terms of the agreement. It is a violation of interWAVE Communications, Inc. proprietary rights to copy the software on any medium except as specifically allowed in the license or nondisclosure agreement. interWAVE and interWAVE Communica-tions, Ltd. hold the following United States Patents: No. 5,577,029, No. 5,654,968, No. 5,682,403, No. 5,721,735, No. 5,734,699, No. 5,734,979, No. 5,761,195, No. 5,781,582, No. 5,818,824, No. 5,842,138, No. 5,887,256, No. 5,953,651, No. 5,957,464, No. 5,999,813, No. 6,070,071, No. 6,078,823, No. 6,081,716, No. 6,101,400, No. 6,169,907, No. 6,173,177, No. 6,212,395, No. 6,269,255, No. USP D 391,967, No. USP D 391,968, No. USP D 397,693.Trademark AcknowledgmentinterWAVE, WaveNet, WaveNet Access, WaveNet Link, WaveNet Transport, Broadband Without Boundaries, StarPort, and StreamNet are trademarks or registered trademarks of interWAVE Communications, Inc. All other trademarks, service marks and product names mentioned in this document are the property of their respective owners.©2002 interWAVE Communications, Inc. All Rights Reserved.
iiiUnited States Federal Communications Commission Required User DocumentationThis equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.Changes or modifications not expressly approved by interWAVE in writing can void the user’s authority to operate this equipment. This device must be professionally installed.This device is to be exclusively used for fixed point-to-point operation with directional antennas.
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vTable of ContentsWelcome! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixDocument Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixMicrowave Radiation Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixRelated Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiiCustomer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiiConventions Used in this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvChapter 1 System Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1.1 Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-2 System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51-4 Link CX Basic Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-4.1 Radio Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-4.2 Data Stream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-4.3 Link CX Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61-4.4 Mounting and Antenna Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71-4.5 Interface Connectors and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71-4.6 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91-4.7 Integral Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101-4.8 External Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111-4.9 Configuration, Operation, and Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131-4.10 SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131-4.11 Link CX Network Management Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131-4.12 NMS Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141-4.13 Web-Based GUI Access Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141-4.14 GUI Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151-5 Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161-5.1 Internet (ISP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171-5.2 Private Network Wireless Bridged LANs and WANs . . . . . . . . . . . . . . . . . . . . . . . . . . 171-5.3 PCS/PCN and Cellular Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171-5.4 Wireless Local Loop Networks and Local Exchange Bypass . . . . . . . . . . . . . . . . . . . . 171-5.5 Business Bypass and Local Exchange Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171-5.6 Backhaul for Wireless MTU and MTU Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181-5.7 Wireless Mesh Backhaul Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191-5.8 Wireless ATM Mesh Distribution with StreamNet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201-6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Chapter 2 Installation Steering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .212-1 Installation Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
vi Link CX User Manual, Version AChapter 3 Installation Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .233-1 Planning a Link CX Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233-2 Site Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283-3 Planning Element and Network Management Ethernet Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283-4 Planning DS-3 Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303-5 Power Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303-6 Transmit Power Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313-6.1 Maximum Link CX Power Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313-6.2 Calculating the Required Transmit Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313-7 Radio Link Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Chapter 4 Installing the Link CX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .354-1 Before Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364-1.1 General Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .364-1.2 Equipment and Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374-1.3 Packing Lists and Orderable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374-1.4 Installation Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404-2 Initial Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414-2.1 Connecting a Craft PC to the Link CX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414-2.2 Logging In to the Link CX Built-In Web Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424-3 Mounting the Link CX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484-3.1 Installing the Link CX Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484-3.2 Attaching the Link CX to the Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 534-4 External Antenna Installation (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 564-4.1 Installing a Factory-Supplied 4 Foot (122 cm) Antenna Mounting Bracket . . . . . . . . . 564-5 Completing the Link CX Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704-5.1 Mounting the Lightning Arrestor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704-5.2 Routing the Data and Power Cables from the Lightning Arrestor . . . . . . . . . . . . . . . . 704-5.3 Grounding the Link CX and Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 714-5.4 Sealing the Data and Power Cable Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 724-6 Aligning the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 734-6.1 Integral Antenna on a Single Adjustable Elevation Mount . . . . . . . . . . . . . . . . . . . . . . 734-6.2 Integral Antenna on a Dual Adjustable Elevation Mount . . . . . . . . . . . . . . . . . . . . . . . 744-6.3 External Antenna on Antenna-Specific Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 754-7 Acceptance Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77Chapter 5 Final Link CX Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81Chapter 6 Monitoring and Trend Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .836-1 Built-In Web Server Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 836-2 SNMP Network and Element Management Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 836-2.1 SNMP Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 836-2.2 Monitoring Error Messages and Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Chapter 7 Troubleshooting the Link CX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .857-1 Troubleshooting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
vii7-2 Using the Link CX LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 867-3 Using RSSI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 867-4 Using a Web Browser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86Appendix 1 Interface Cable Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87A1-1 DS-3 Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87A1-2 Ethernet Data Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87A1-3 DC Power Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88A1-4 Ethernet Crossover Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88A1-5 External Antenna Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89A1-6 RS-232 Craft Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89A1-7 StreamNet ATM Switch Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Appendix 2 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91A2-1 Link CX Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91A2-2 Factory-Supplied Antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97Appendix 3 Using the Web-Based GUI User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99A3-1 Web Browser Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99A3-2 Connecting A Web Browser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99A3-3 Accessing the Link CX Web Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99A3-4 Link CX Web Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Appendix 4 Grounding and Lightning Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107A4-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107A4-2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108A4-3 Lightning Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109A4-4 Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Appendix 5 Enterprise MIBs and Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111A5-1 Enterprise MIB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111A5-2 Enterprise Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
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ixPrefaceWelcome!This manual is intended for the technical personnel who will install and operate the U-NII (Unlicensed National Information Infrastructure) and ISM (Industrial, Scientific and Medical) Link CX. Such personnel are typically experienced and skilled technicians familiar with on site, physical installation and connection of equipment, including maintenance work. It is also intended for system administration personnel performing initial configuration and subsequent system reconfiguration, as well as current system maintenance activities.Document OrganizationThis manual provides a detailed description of the Link CX components, and operating, installation and management procedures.•Chapter 1 provides an overview and briefly describes typical applications.•Chapter 2 provides an installation steering guide with references to subsequent installation sections.•Chapter 3 describes how to plan the Link CX network, radio links, and remote element and network management links, and individual Link CX radios.•Chapter 4 provides detailed hardware installation and acceptance test procedures.•Chapter 5 describes final configuration procedures and the Web browser user interface.•Chapter 6 presents procedures for monitoring and performing trend analysis on the Link CX.•Chapter 7 provides instructions for troubleshooting the Link CX.•Appendixes provide detailed technical information for carrying out the installation and main-tenance activities described in the other chapters of this manual. Microwave Radiation WarningsRadio WarningUnder normal operating conditions, Link CX radio equipment complies with the limits for human exposure to radio frequency (RF) fields adopted by the Federal Communications Commission (FCC). All interWAVE Communications, Inc. microwave radio equipment is designed so that under normal working conditions, microwave radiation directly from the radio is negligible when compared with the permissible limit of continuous daily exposure recommended in the United States by ANSI/IEEE C95.1-1991 (R1997), Safety Levels with Respect to Human Exposure to Radio Frequency Electromag-netic Fields, 3 kHz to 300 GHz.
x Link CX User Manual, Version AMicrowave signal levels that give rise to hazardous radiation levels can exist within transmitter power amplifiers, associated RF multiplexers, and antenna systems.Antenna WarningDesigned for point-to-point operation, the Link CX microwave radio system uses directional antennas to transmit and receive microwave signals. These directional antennas are usually circular or rectangular, are generally located outdoors, and are usually mounted with the Link CX on a tower or mast.The Link CX is classified as a fixed installation product, and per FCC policy guidelines regarding maximum permissible exposure (MPE), antennas used for this interWAVE radio must be installed to provide a separation distance of 2 m (79 in.) or more from all persons during normal operation to satisfy FCC RF exposure limits. As the Link CX is typically mounted on a building or mast high enough to clear ground-level path obstructions, the general population will be further than 2 m (79 in.) from the radio antenna, and the FCC RF exposure limits will be met.interWAVE Communications, Inc. fully supports the FCC’s adopted MPE limits, and recommends that personnel stay 2 m (79 in.) or more from the front of all directional microwave antennas. Should you have questions about Link CX microwave signal radiation, please contact interWAVE Customer Support. FCC Regulatory InformationThe Link CX is certified for use in the 5.3 GHz and 5.8 GHz unlicensed bands in the United States. The 5.3 GHz version of the Link CX is certified under FCC part 15.407, U-NII regulations covering the frequency band of 5250-5350 MHz.5.3 GHz (5.25-5.35 GHz)5.3 GHz Link CX radios are equipped with an integral antenna only, and operate under the FCC Part 15, subpart E, U-NII license-exempt regulations, which certify the radios for –1.0 dBm average, or +7.4 dBm peak transmit power. The 5.3 GHz Link CX radios have been certified in the following configuration:•Link CX, 5.3 GHz, integral antennaThe following table summarizes the technical specifications of the 5.3 GHz version of the Link CX. Never look into the front of an open RF connection or RF antenna as eyes are particularly vulnerable to radiation. Do not disconnect RF coaxial connectors, open microwave units, or break down any microwave screening while the radio equipment is operating.
xi5.8 GHz (5.725-5.825 GHz)The 5.8 GHz Link CX radios operate under the FCC Part 15.247 band regulations, which certify the radios for +16 dBm average or +24.1 dBm peak transmit power for intentional radiators in a point-to-point configuration. The 5.8 GHz Link CX radios are equipped with an integral or an external antenna. The 5.8 GHz Link CX radios have been FCC certified in the following configurations:•Link CX, 5.8 GHz, integral antenna•Link CX, 5.8 GHz, 2 ft. (61 cm) external Radio Waves, Inc. Model SP2-5.2 parabolic antenna•Link CX, 5.8 GHz, 2 ft. (61 cm) external Gabriel Electronics, Inc. Model SSP2-52B parabolic antenna•Link CX, 5.8 GHz, 4 ft. (122 cm) external Gabriel Electronics, Inc. Model SSP4-52B para-bolic antennaSee the following table summarizing the technical specifications for the 5.8 GHz version of the Link CX.Table 1 5.3 GHz Link CX SpecificationsParameter DescriptionFCC Identifier OEWCX-DS3-53GFrequency Band 5250 – 5350 MHz, U-NII per 15.407Mode of Operation Full Duplex, 100% duty cycleChannel Spacing 16 MHzTransmit / Receive Separation 60 MHzNumber of Channel Pairs 2Channel Pair 1 5262 MHz / 5322 MHzChannel Pair 2 5278 MHz / 5338 MHzModulation 16 QAM, α = 0.15Emission Bandwidth (26 dB) 13.9 MHzFrequency Stability +/- 5.0 PPMMaximum Output Power -1.0 dBm average (+7.4 dBm peak)Antenna Type Integral flat panelAntenna Gain 21 dBiUser Interfaces DSX3 coaxial, 10/100 base-T Ethernet, Craft PC RS-232 interface
xii Link CX User Manual, Version ANote that any references in this manual referring to external antennas, or external antenna mounting only apply to the 5.8 GHz version of the Link CX. The 5.3The 5.8 GHz Link CX radios are equipped with an integral or an external antenna, GHz version is certified for use with the integral antenna only.Related DocumentationAll interWAVE manuals are available in an online format on our protected Internet site. To order docu-mentation, please contact interWAVE Communications, Inc. Sales department online at http://www.iwv.com.Updates to this manual will be posted on the interWAVE Communications, Inc. Customer Support website at http://www.iwv.com/custsupport. Registered interWAVE customers can access the interWAVE online information and support service, available 24 hours a day, seven days a week. The interWAVE online service provides users with a wealth of up-to-date information, with documents being added or updated each month.Table 2 5.8 GHz Link CX SpecificationsParameter DescriptionFCC Identifier OEWCX-DS3-58GFrequency Band 5725 – 5850 MHz, per 15.247, revised 5/16/02Mode of Operation Full Duplex, 100% duty cycleChannel Spacing 16 MHzTransmit / Receive Separation 60 MHzNumber of Channel Pairs 2Channel Pair 1 5737 MHz / 5797 MHzChannel Pair 2 5753 MHz / 5813 MHzModulation 16 QAM, α= 0.15Emission Bandwidth (26 dB) 13.9 MHzFrequency Stability +/- 5.0 PPMMaximum Output Power +16 dBm average (+24.1 dBm peak)Antenna TypesIntegral flat panel, 2 ft. parabolic – Radio Waves, Inc. Model SP2-5.2, 2 ft. parabolic – Gabriel Electronics, Inc. Model SSP2-52B4 ft. parabolic – Gabriel Electronics, Inc. Model SSP4-52BAntenna Gains 21 dBi, 28.3 dBi, and 34.6 dBiUser Interfaces DSX-3 coaxial, 10/100 base-T Ethernet, Craft PC RS-232 interface
xiiiCustomer Support ServicesinterWAVE has regional Customer Support centers that handle day-to-day customer issues. Each center is staffed with a local technical support group. The exact services to be performed by the interWAVE Customer Support department are specified in a support contract. Below is an example of the types of services available:•Telephone support•Site surveys•Installations•Off-line and online commissioning•Network integration activities•Troubleshooting and fault isolation•Escalation of problems to appropriate interWAVE technical departmentsinterWAVE can physically perform all or a portion of these processes for the operator, as specified in the support contract. The Customer Support department can also provide documentation outlining corrective and preventive maintenance procedures and troubleshooting guides for fault isolation. Contact your local Sales Support office, or interWAVE headquarters directly via the Internet at http://www.iwv.com.If possible, please have the following information available when making a call:•Site number or name•Full description of product(s) (e.g., model and part number) and configuration •Serial number of product(s)•Purchase order number•Contact name and telephone number•Ship to address•Bill to addressFor support on installing or configuring all interWAVE equipment, contact your Regional interWAVE Customer Support Center at:•+852.2574.1922 or asia_support@iwv.com.hk -- Asia and Pacific Rim•+1.866.306.1263 or usa_support@iwv.com -- North and South America, Europe, Africa, and Middle Eastor via the Internet at http://www.iwv.com/custsupport.
xiv Link CX User Manual, Version AReturn Materials AuthorizationIn the event that a depot repair or hardware replacement is required after contacting Customer Support, please contact interWAVE for return authorization. The following information is required by interWAVE:•Full description of the product(s): model and part number•Serial number of the product(s)•Purchase order number•Quantity that needs to be returned to interWAVE, if applicable•Description of observed problemAll interWAVE products carry a one year manufacturing warranty from the date of shipment. At the time of a request for a return authorization, if the product has exceeded the warranty period, interWAVE will require a new purchase order number to cover the cost of non-warranty repair.Contact Sales Operations via the Internet at http://www.iwv.com or email at rma@iwv.com.TraininginterWAVE has developed an extensive series of training courses designed to teach you how to use our products. The courses are developed by a combination of subject matter experts and training specialists in order to create highly technical materials in modern training format. Each of our course offerings are designed around specific learning objectives that keep our classes on track to learning specific job skills related to interWAVE products.The interWAVE training catalog contains a listing of the interWAVE training services available along with descriptions of each course. Our training materials are divided into specific subsystem training series, depending upon the topic and job requirements.Contact Customer Support via the Internet at http://www.iwv.com or email at training@iwv.com.
xvConventions Used in this ManualThe following type and style conventions are used in this manual:sssssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssssssssss sssssssssss ssssssssss sssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss ssss sssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssssssss sssssss ssss ssssss sssssssssss ssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss sssssssssss ssssssssss ssssssssss sssssss ssss ssssss ssssssssss sssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss sssss ssssss ssssssssssssssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssssssssss sssssssssss ssssssssss sssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss ssss sssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssssssss sssssss ssss ssssss sssssssssss ssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss sssssssssss ssssssssss ssssssssss sssssss ssss ssssss ssssssssss sssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss sssss ssssss ssssssssssssssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssssssssss sssssssssss ssssssssss sssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss ssss sssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssssssss sssssss ssss ssssss sssssssssss ssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss sssssssssss ssssssssss ssssssssss sssssss ssss ssssss ssssssssss sssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss sssss ssssss ssssssssssssssss ssss ssssss ssssssssss sssssssssss ssssss ssss sssssss ssssssssss ssssssssss sssssssssss ssssss ssssssssss sssssssssss ssssssssss sssss ssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss ssssss sssss ssssss ssssssssss sssssssssss ssssss ssss ssssss sssssssssss ssssssssss sssTable 3 Conventions Used in This ManualConvention MeaningBody text Used for regular body textBold Indicates a menu or button choiceCommand Indicates computer generated text and promptsUser Input Indicates user input<hostname> In command syntax, indicates user-specified command line parameters<variable> In body text, indicates user-specified command line parameters[BRACKETS] Indicates a key on the keyboard or instrumentProvides relevant additional informationProvides important warning information that may affect operation of or maybe a potential threat to the systemUsed to tell the reader to STOP what they are doing and to read important instructions that are vital to prevent equipment or software damage
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System Description 1OneSystem Description 10000This chapter contains a functional description of the Link CX product family, and contains the following sections:•Section 1-1, General•Section 1-2, System Overview•Section 1-3, Features•Section 1-4, Link CX Basic Structure•Section 1-5, Typical ApplicationsWelcome to the interWAVE WaveNet Link Series product family. This manual is designed to introduce you to the Link CX products, and to provide you with information necessary to plan, install, operate and maintain a Link CX wireless communication system.The Link CX is intended for professional installation only. However, this manual is also designed for personnel who plan, operate and administer the Link CX communication system. Please review the entire manual before powering up or deploying any Link CX.1-1 General1-1.1 ProductsThe Link CX products are cost-effective, all-outdoor, pole-mounted, high-capacity, line-of-sight (LOS) digital radio transmission systems, each operating in the license-exempt 5.25-5.35 GHz (5.3 GHz) or 5.725-5.825 GHz (5.8 GHz) frequency bands. The Link CX can be used for the following applications: point-to-point or building-to-building, WLL (wireless local loop), backup solutions, temporary links, and mesh cellular backhaul.•The 5.3 GHz Link CX-DSX DS-3 and 10/100 versions conform to the FCC (Federal Commu-nications Commission) Part 15.407 Subpart E describing U-NII (Unlicensed National Information Infrastructure) operation. It operates at up to -1.0 dBm average transmit power, and is intended for short-distance use. •The 5.8 GHz Link CX-DSX DS-3 and 10/100 versions conform to the FCC Part 15.247 describing intentional radiators. It operates at up to +16 dBm average power, and is intended for use over longer distances. Both Link CX-DSX versions provide either a standard DS-3 (44.736 Mbps) interface adhering to Bellcore GR-499-CORE (DSX-3) standards, or provides two Ethernet 10/100Base-T interfaces adhering to IEEE 802.3 standards, with a combined nominal line rate of 45 Mbps.
2 Link CX User Manual, Version AEach Link CX is powered by an external ±21 to ±60 VDC power supply.1-1.2 ApplicationsThe Link CX product line is designed to serve the following communications markets:•Internet Access and Backhaul Systems: Used by Internet Service Providers (ISPs).•Private Networks: Wireless Bridged LANs and WANs.•PCS/PCN and Cellular Networks: High speed links between base stations.•Wireless Local Loop Networks: Fixed wireless, used by Local Exchange Carriers (LECs). •Business Bypass or Local Exchange Bypass: Provided by Competitive Access Providers (CAPs) and Competitive Local Exchange Carriers (CLECs). •When used with interWAVE StreamNet ATM Switches, the Link CX can provide the radio links in a self-healing wireless mesh backhaul network to support broadband communica-tions, including DSL (Digital Subscriber Line) and Cellular over ATM (Asynchronous Transfer Mode).1-2 System OverviewEach Link CX consists of a Link CX radio, with integral antenna (5.3 GHz or 5.8 GHz versions) or an optional external antenna (5.8 GHz versions), as shown in Figure 1-1, along with external power and data cabling. In a typical installation, the Link CX radio and antenna are mounted outdoors, usually on a tower or building. If so equipped, the external antenna connects to the Link CX radio through a factory-supplied coaxial cable.See Figure 1-1. A radio system, or link, contains two Link CX radios each equipped with either an integral or external antenna, installed at each end of the link, separated by a line of sight transmission path. Frequency band, terrain, actual line-of-sight and environmental conditions influence the range of operation and path performance.The Link CX carries one full-duplex DS-3 or Ethernet channel, and is powered by a 30-watt external ±21 to ±60 VDC power supply.
System Description 3Figure 1-1 Typical Radio Link ConfigurationsA. Radio Link using 5.3 GHz or 5.8 GHz Link CX with Integral AntennasB. Radio Link using 5.8 GHz Link CX with External AntennasLine of SightTransmission PathLine of SightTransmission PathDS-3 orEthernet DataDS-3 orEthernet DataDS-3 orEthernet DataDS-3 orEthernet DataIW140201
4 Link CX User Manual, Version ABecause the Link CX can be ordered in two different bands, with high and low channels, and can be installed with horizontal or vertical polarization, up to eight Link CXs can be mounted at a each hub, or node, to form part of a star or mesh network. See Figure 1-2.Figure 1-2 CX-UNII and CX-ISM Star NetworkIW1342042V 5.81H 5.82H 5.31V 5.31H 5.82V 5.82H 5.31V 5.3Link CX 5.8Link CX 5.3aa =0 - 90°Channel 1,Horizontal1H =Channel 2,Vertical2V =
System Description 51-3 FeaturesThe Link CX offers the following features:•Robust outdoor all-outdoor enclosure.•Integral or external antenna.•Sturdy radio mounting systems for quick, accurate and reliable integral antenna alignment.•Operates in the license-exempt 5.25-5.35 GHz (5.3 GHz) or 5.725-5.825 GHz (5.8 GHz) bands.•Conforms with FCC Part 15.247 rules (5.725-5.825 GHz) or Part 15.407 rules (5.25-5.35 GHz).•Full-duplex transmission:•DS-3 (DSX-3, per Bellcore GR-499-CORE)•Ethernet 10/100Base-T (per IEEE 802.3) •Easy configuration, installation, operation, and maintenance.•Integral web server for configuring, operating, and monitoring using an HTML-based web browser GUI.•Ethernet interface used with NMSs (Network Management Systems) or EMSs (Element Management Systems) using SNMP (Simple Network Management Protocol) traps. Supports MIB-II (Management Information Base II) and interWAVE enterprise MIB.•ATPC (Automatic Transmit Power Control).•Self Test, BER test mode, RF and digital loopbacks.•Reed Salomon Forward Error Correction (FEC).•Operating and backup software versions contained in Link CX memory, operator-selectable.
6 Link CX User Manual, Version A1-4 Link CX Basic Structure1-4.1 Radio LinksEach radio link includes two Link CX terminals. Each terminal consists of a Link CX radio with an integral flat-panel antenna, or a Link CX radio with an external antenna (see Figure 1-1). Generally, the Link CX terminals are mounted outdoors on a tower or building. 1-4.2 Data StreamThe DS-3 or Ethernet data signals enter the Link CX, and are modulated into the RF data stream. The RF radio signal radiates from the local antenna and propagates to the remote antenna. At the remote terminal, the received signal is demodulated and demultiplexed, separating the payload data and the overhead management data.1-4.3 Link CX ModelsThe Link CX is manufactured in many configurations:•Versions with DS-3 or Ethernet carried over 5.3 GHz or 5.8 GHz links.•Each version available with either an integral 30 x 30 cm (12 x 12 in.) antenna, or with an N-type connector for a factory-supplied 61 cm (2 ft.) or 122 cm (4 ft.) external antenna, or an N-type connector for a customer-supplied external antenna.Link CX models are described in Table 1-1. Table 1-1 Link CX ModelsModel Transmit Band Frequency Band Link Carries AntennaM100746-101M100747-101LowHigh 5.25-5.35 GHz DS-3 IntegralM100748-101M100749-101LowHigh 5.725-5.825 GHz DS-3 IntegralM100748-102M100749-102LowHigh 5.725-5.825 GHz DS-3 External, 61 or 122 cm (2 or 4 ft.)M100746-201M100747-201LowHigh 5.25-5.35 GHz Ethernet (45 Mbps) IntegralM100748-201M100749-201LowHigh 5.725-5.825 GHz Ethernet (45 Mbps) IntegralM100748-202M100749-202LowHigh 5.725-5.825 GHz Ethernet (45 Mbps) External, 61 or 122 cm (2 or 4 ft.)
System Description 71-4.4 Mounting and Antenna AlignmentTo ensure proper mounting and antenna alignment interWAVE sells mounting brackets designed for use with the Link CX. The single bracket mounts one Link CX, while the dual bracket mounts two Link CXs back-to-back. Both brackets are designed to provide rugged mounting for the Link CX, while allowing fine adjustment for antenna alignment.1-4.5 Interface Connectors and IndicatorsSee Figure 1-3 for a view of the Link CX external connectors and indicators. The Link CX connectors and indicators are described in Table 1-2.Figure 1-3 Link CX Interface Connectors and IndicatorsIW0602031 POWER2 CRAFT3 RSSI8 External Antenna (on far side, if equipped)6 ETHERNET 27 ETHERNET 14 OUT5 IN9 LEDs
8 Link CX User Manual, Version ATable 1-2 Link CX Interface Connectors and IndicatorsNo. Name Component Description From Note1POWERMale 4-Pin Circular ConnectorPower input plug Power Supply Accepts ±21 to ±60 VDC2 CRAFTFemale 4-Pin Circular ConnectorRS-232 receptacleAsynchronous laptop port1200 to 115,200 baud, used only for tech support troubleshooting3 RSSI Female BNC ConnectorReceive Signal Level Indicator VoltmeterVerifies RF signal strength, used to align antenna4OUT Female TNC ConnectorDS-3 data from the radio linkDS-3 data equipment --5IN Female TNC ConnectorDS-3 data to the radio linkDS-3 data equipment --6 ETHERNET 2Female 4-Pin Circular Connector10/100Base-T transmit and receive receptacleEthernet equipmentFor Ethernet data or link to SNMP or Web manager, or use to daisy-chain Ethernet port to next Link CX in cascade7 ETHERNET 1Female 4-Pin Circular Connector10/100Base-T transmit and receive receptacleEthernet equipment (Same as ETHERNET 2)8ANTENNA PORT (Opt.)Female N-type Connector50 Ohm RF receptacleExternal antennaOnly equipped on external-antenna models, on far side of chassis9PWR/LCL ALMRF LINKDATAENET 2ENET 1Green LEDGreen LEDGreen LEDGreen LEDGreen LEDPower/Local Alarm StatusRadio Link StatusDS-3 StatusEthernet StatusEthernet Status--ON = Power OK, no alarm, Flashing = Local alarm, OFF = Power off.ON = Rcv. OK, OFF = Link Alarm.ON = OK (no LOS), OFF = LOS.ON = OK, Flashing = data, OFF = No conn.ON = OK, Flashing = data, OFF = No conn.Note: For connector pinouts, refer to Appendix 1.
System Description 91-4.6 CablesTo ensure longevity in a outdoor environment, interWAVE sells various cables designed for use with the Link CX. interWAVE offers the following weather-resistant cables:•DS-3 and Ethernet data cables and the power cables are offered in 25 m (82 ft.), 50 m (164 ft.), and 100 m (328 ft.) lengths. •A 6 m (19.7 ft.) Ethernet cable is available to route the Ethernet signal between two Link CXs in the same location, or when you are configuring the Link CX from a Craft PC.•For models to be used with external antennas, a 2 m (6.6 ft.) N-to-N RF cable is available to connect the external antenna to the Link CX.•A 6 m (19.7 ft.) RS-232 4-pin Circular-to-DB9 Craft cable is available to connect a Craft PC to a Link CX for future CLI applications.•When the Link CX is to be used with a StreamNet ATM Switch for a mesh backhaul network, a 6 m (19.7 ft.) dual TNC-to-TNC cable is available to connect each StreamNet ATM Switch to a Link CX.All of the cables described above include weather-resistant connectors and moisture-excluding gel inside the cable sheaths. For this reason, interWAVE recommends that customers and installers not attempt to shorten or splice the factory-supplied cables.
10 Link CX User Manual, Version A1-4.7 Integral AntennaThe integral antenna is a 30 cm x 30 cm (12 in. x 12 in.) flat-panel antenna mounted directly on the 5.3 GHz or 5.8 GHz Link CX radio chassis, as shown in Figure 1-4. All RF connections between the integral antenna and the Link CX radio are made internally, eliminating the need for external coaxial cabling. Because the integral antenna is sealed onto the Link CX chassis, the Link CX and integral antenna are mounted as a unit, and share the same environmental protection. An arrow on the connector side of the Link CX chassis indicates the antenna polarization (either vertical or horizontal).Figure 1-4 Integral Antenna and Link CX RadioIntegralAntennaLink CXRadioIW060201
System Description 111-4.8 External AntennaSome 5.8 GHz Link CX models use an external antenna to radiate and receive RF signals. The antenna attaches to the Link CX via a factory-supplied cable. The following sections describe factory- and customer-supplied external antennas.Factory-SuppliedThe following external antennas are offered for use with the Link CX:•61 cm (2 ft.) parabolic type•122 cm (4 ft.) parabolic typeFigure 1-5 shows a typical 61 cm external antenna with N-type connector cabled to the Link CX radio.The antenna type should be selected according to local regulatory rules and system gain requirements.For the available antenna models refer to Table 1-3. Complete antenna specifications are provided in Appendix 2.Customer-SuppliedThe Link CX can be ordered with a coaxial cable to be connected to a customer-supplied external antenna. In this case, refer to the external antenna user documentation for specifications and model numbers.Table 1-3 Antenna ModelsModel Description091-455524-101 Parabolic antenna, 5.725-5.825 GHz, 61 cm (2 feet)091-455548-101 Parabolic antenna, 5.725-5.825 GHz, 122 cm (4 feet)
12 Link CX User Manual, Version AFigure 1-5 Typical Factory-Supplied External Antenna and 5.8 GHz Link CX RadioIW060204ExternalAntennaLink CXRadioFactory-SuppliedCoaxial Cable
System Description 131-4.9 Configuration, Operation, and MonitoringThe Link CX and radio link are configured, operated and monitored through one of five user interfaces. The five interfaces are:•A built-in web server GUI hosted by the Link CX, which can be accessed by any local or remote computer equipped with a web browser. This is the interface most operators will use to interact with the Link CX. The web browser can access the Link CX built-in web server through either the ETHERNET 1 or ETHERNET 2 port.•SNMP traps, which communicate with MIB-II compliant NMSs (Network Management Systems) and EMSs (Element Management Systems). This interface is used by operators who want real-time notification of radio problems. The Link CX sends SNMP traps to NMSs and EMSs over Ethernet links through either the ETHERNET 1 or ETHERNET 2 port.•An ASCII command line interface, accessible through the RS-232 CRAFT port, or through the ETHERNET 1 or ETHERNET 2 port using telnet. This interface is primarily used by opera-tors and interWAVE technical support personnel when performing detailed troubleshooting. •The RSSI port, providing a DC voltage level proportionate to the received RF signal level, and allowing installers to use a DC voltmeter to fine-tune antenna alignment. This interface is primarily used during installation, but the current RSSI measurement is also available via the Link CX built-in web server or via SNMP polls.•Five LEDs that provide visual alarm status. They verify proper operation of the Ethernet ports, DS-3 ports, and radio link, and indicate proper power input and radio operation. These LEDs are usually used during installation to provide a quick product verification.1-4.10 SNMPThe Link CX radio supports SNMP network management. SNMP is a protocol that defines the method of communicating with and controlling network devices. Devices that support the SNMP protocol can be queried for their status and other device information. Some devices allow changing device settings or configurations using SNMP commands. The device settings and other device data are available as variables. They are defined in the standard Management Information Base (MIB) file, provided by the device manufacturer. The SNMP manager uses a database to hold lists of variables that can be accessed for each device on the network. The device data can be displayed in tables, graphs, or saved in a file.1-4.11 Link CX Network Management ArchitectureLink CX software network management is comprised of two main items:•SNMP based Network Management System (NMS) application in the network management workstation. Note that the ETHERNET 1 and ETHERNET 2 ports are functionally equivalent, and that they are both served by an onboard Ethernet controller. The controller automatically switches polarity on the transmit and receive pairs when they are reversed, eliminating the need for crossover cables.
14 Link CX User Manual, Version A•SNMP agent in the Link CX.The workstation manages all Link CXs assigned unique IP addresses. The workstation also provides a graphical display of the network objects showing the status, performance, and configuration parameters of each Link CX radio. The SNMP local agent is a standard MIB-II compliant software module that resides in each Link CX. The agent collects information from different Link CX components as defined in the Management Information Base (MIB) structure. The Link CX incorporates both standard and private MIBs.Different Link CXs are distinguished by their customer-assigned IP addresses. The Web browser communicates with the Link CX using TCP/IP and HTTP protocol.The NMS data transfer between the manager and the agents is accomplished using either polling or trapping techniques.PollingThe NMS polls each Link CX SNMP agent at specific intervals. These are set according to user requirements during SNMP NMS configuration. TrapsThe Link CX agent sends an SNMP trap to the manager whenever a predefined event occurs. Groups of traps can be defined according to their level of severity. The operator can choose to enable or disable any traps or group of traps according to their level of severity (and his or her own security level). Traps can be logged using any standard SNMP manager.1-4.12 NMS ConnectivityThe NMS workstation can access any Link CX using its IP address. The NMS workstation can connect to each Link CX using any of the following methods:•10/100 Base-T Ethernet - accessing Link CXs via a LAN through hubs, switches or routers. •Cascading Ethernet links transport NMS information between colocated Link CXs. This is done by daisy-chaining the ETHERNET 1 and ETHERNET 2 ports between Link CX radios using straight-pinned or crossover Ethernet cables.1-4.13 Web-Based GUI Access SecurityAccess to the Web-based GUI (graphical user interface) is limited by username and password, which is available at different levels of security as follows:•User - Read only privilege.•Administrator - Read/partial write privilege. The administrator cannot cause an radio link to reset by changing critical parameters.•Supervisor - Full read/write privilege.
System Description 151-4.14 GUI FunctionsThe Web-based GUI monitors and controls the main functions of the Link CX. These functions are listed below and detailed in the following sections:•Configuration management•Status and fault management•Test activation and monitoring•Software downloading•Performance monitoringRefer to Appendix 3 for Link CX GUI operating instructions.Configuration ManagementThe NMS software can be used to configure the parameters of the Link CX radio, although this is normally done using a web browser GUI. This includes the setup of templates with predetermined default values, relating to both the parameters of common element types and the validation of parameter values. It also includes saving and loading configuration files for individual Link CX radios. The NMS also controls the uploading and downloading of individual parameter values, and complete configuration setups. Parameter configuration is terminal-oriented. Every configuration session deals with the Link CX as accessed by its particular IP address. Some of the parameters, such as RF channel number, link ID, etc. affect the Link CXs on both ends of the radio link. Special care should be taken to activate the new parameter values consistently on both ends of the radio link.Status and Fault ManagementStatus and fault management involve a selective display of failures alerting the user to take actions according to a decision making tree. Some status indications and alarms may report conditions that pertain to both ends of the radio link. These ends are commonly referred to as local and remote.Test Activation and MonitoringFollowing is a brief description of the tests that can be invoked and monitored by the Web based NMS.LoopbacksThe loopbacks are incorporated into the radio to assist in detecting equipment/component/cable failure during both installation and normal operations. Loopbacks are user initiated. Link CX supports RF and various interface loopbacks.Note that the ‘local’ system is the Link CX you are logged into, and the ‘remote’ Link CX is the one at the far end of the radio link. Thus, when you are logged into the far end Link CX on a radio link that terminates at your current physical location, the far end Link CX is ‘local’ and the near end Link CX is ‘remote’.
16 Link CX User Manual, Version ABER TestThe following Bit Error Rate (BER) test is provided by Link CX:•Pseudo random signal generator - capable of inserting a standard test signal for BER measurements, and local- and remote-end loopback functions.•BER measurements of radio link performance under normal operating conditions.Software DownloadingThe Web-based user interface enables off-line operation and SNMP updates of files. Alternatively, when on-line, configuration can be updated from the NMS to the Link CX agent. Another way to upgrade multiple Link CXs is to use FTP.Note that the Link CX can hold two software loads in memory, which facilitates upgrading and reverting to a previous software version.Certain factory default software settings are always retained at the Link CX to safeguard against complete failure of communications caused by equipment restart.Performance MonitoringEach Link CX gathers various statistics regarding radio link performance. The Web based user interface can retrieve and analyze these statistics upon demand. In addition, the Web based user interface manager processes its own general statistical data, based on the information that is received. Current BER, Receive Signal Strength Indicator (RSSI), and other performance monitors are available for the radio link.The Web-based user interface is designed to easily interface with optional graph management software packages for sophisticated performance presentation.1-5 Typical ApplicationsLink CX gives the user great flexibility in setting up point-to-point radio links on a very cost effective basis, because it avoids unnecessary outlays in expensive leased lines or fiber optic land-based lines. Low cost of ownership makes return on investment (ROI) attractive compared to leased lines.Link CX advantages over copper/fiber alternatives include: short installation time, easy maintenance using NMS software, independence of competing PTTs, avoiding the need to secure normal right-of-way and/or physical installation permits, and redeployable depending on changing needs.The simplicity of the Link CX installation makes it easy for the user to implement Link CX in a variety of applications. It also means that the user can conveniently move a previously installed Link CX to a new location to meet the requirements of a changing system. Link CX enables seamless future software upgradability, protecting customer investment, reducing logistics, spare parts and product stocking. The following sections briefly describe typical applications.
System Description 171-5.1 Internet (ISP)The appetite for higher Internet access speeds require faster ISP access and backhaul and ISP connections to businesses. The Link CX radio is perfectly suitable for both backbone and direct end-user connectivity. 1-5.2 Private Network Wireless Bridged LANs and WANsLink CX radios are also used to provide communications links for private networks. For companies requiring frequent communications into areas without extensive telecommunications infrastructure or in areas where the cost of local access is high, installing and maintaining a Link CX radio network can be very cost effective. Typical users of private networks include: government agencies such as land management, municipal agencies, and universities; large utilities such as oil, gas, and electric concerns; and companies with widely deployed assets such as railroads and timber resource managers.1-5.3 PCS/PCN and Cellular NetworksCellular operators mainly use Link CX radio links for Base Transceiver Station (BTS) interconnections, BTS to Base Station Controller (BSC), and BSC to BSC interconnections. 1-5.4 Wireless Local Loop Networks and Local Exchange BypassWireless systems in emerging markets were originally deployed to provide premium services to a mobile subscriber base. However, middle and lower income countries have driven mobile network providers into a new business - the substitution of wireless service for fixed service, so-called fixed wireless networks, providing a cost-effective solution in situations where no wireless infrastructure exists. Wireless local loop (last mile) networks are implemented mostly by Local Exchange Carriers (LECs).Alternative carriers, such as Competitive Access Providers (CAPs) and Competitive Local Exchange Carriers (CLECs) use radio links to establish standard telecommunications links between their customers’ sites and their own backbone networks. This way CAPs and CLECs provide their customers with cost-effective local area telephone service and cheaper long distance services.1-5.5 Business Bypass and Local Exchange BypassThe Link CX radio is a perfect solution for Business Bypass and Local Exchange Bypass applications.
18 Link CX User Manual, Version A1-5.6 Backhaul for Wireless MTU and MTU AccessThe Link CX radio can be used as an infrastructure element in wireless Multiple Tenant Unit (MTU) and Multiple Dwelling Unit (MDU) applications, when used with interWAVE StreamNet products. Figure 1-6 shows a typical wireless MTU/MDU access configuration.Figure 1-6 Typical Wireless MTU/MDU Access ConfigurationIW142201StreamNet2400StreamNet2400StreamNet2400To AT MNetworkLink CXRadioLink CXRadioLink CXRadioLink CXRadio45 MbpsDS-3ATM-FedDSLAM IAD IAD10-BaseT POTS x 16 10-BaseT POTS x 16Link CXRadio45 Mbps
System Description 191-5.7 Wireless Mesh Backhaul Networks2.5G and 3G cellular systems, which integrate voice and data, require higher-capacity backhaul, QoS (Quality of Service), BoD (Bandwidth on Demand), ability to dynamically load balance bursty traffic, and provide support for legacy 1G and 2G systems. When used with interWAVE StreamNet ATM Switches, the Link CX can provide the radio links for a self-healing wireless mesh backhaul network to support broadband ATM communications to support this application. These networks feature high reliability, lower maintenance costs, improved scalability, and enhanced interference mitigation.DSL providers are typically limited by the quality of existing copper lines to a short distance from the CO (Central Office). To serve customers farther from the CO, DSLAMs (DSL Access Modules) must be used closer to the customer site. The backhaul from DSLAMs to the CO has to be robust to reduce or eliminate downtime, and must have sufficient bandwidth to support DSL traffic. When used with StreamNet ATM Switches, the Link CX can provide the radio links for a self-healing wireless DSLAM mesh backhaul network to support these requirements. See Figure 1-7 for a typical wireless mesh backhaul network.Figure 1-7 Typical Wireless DSLAM Mesh Backhaul NetworkIW086201High-Capacity RadioLow-Capacity RadioSwitch Node/DSLAMPOP Aggregator
20 Link CX User Manual, Version A1-5.8 Wireless ATM Mesh Distribution with StreamNetWhen used with interWAVE StreamNet ATM Switches, the Link CX can provide the radio links for a self-healing wireless ATM mesh backhaul network to support broadband communications. These networks feature high reliability, lower maintenance costs, improved scalability, and enhanced interference mitigation. See Figure 1-8 for a typical wireless ATM mesh backhaul network.1-6 SpecificationsRefer to Appendix 2 for Link CX specifications.Figure 1-8 Typical Wireless ATM Mesh Backhaul NetworkIW134205Link CX 5.8Link CX 5.3POP2H 5.32H 5.32H 5.32H 5.32H 5.3 1V 5.31V 5.31V 5.32V 5.82V 5.81H 5.8 1H 5.81H 5.81H 5.8StreamNetSAI
Installation Steering Guide 21TwoInstallation Steering Guide 20000This chapter briefly outlines the complete installation and configuration procedure for the Link CX, and a flowchart of this process is given. The topics discussed here are presented in detail in subsequent chapters of this manual.2-1 Installation Flow ChartThe flow chart in Figure 2-1 includes references to the installation and troubleshooting sections in this manual.
22 Link CX User Manual, Version AFigure 2-1 Installation FlowchartStartIW017201Not OKSection 4-1Before InstallingSection 4-4 External AntennaInstallation (Optional)Section 4-3Mounting the Link CXChapter 5Final Link CX ConfigurationSection 4-7Acceptance TestingChapter 7TroubleshootingOKEndChapter 3Planning the InstallationSection 4-2Initial ConfigurationSection 4-5 Completing theLink CX InstallationSection 4-6Aligning the Antenna
Installation Planning 23ThreeInstallation Planning 30000This chapter provides a comprehensive planning guide for Link CX installations, and includes a Radio Link Planning Worksheet that should be filled out for each radio link. Fill out a copy of the Radio Link Planning Worksheet before continuing with Chapter Four.In addition, this chapter provides an introduction to Network Management System (NMS) software and configuration issues.This chapter contains the following sections:•Section 3-1, Planning a Link CX Network•Section 3-2, Site Planning•Section 3-3, Planning Element and Network Management Ethernet Links•Section 3-4, Planning DS-3 Links•Section 3-5, Power Planning•Section 3-6, Transmit Power Planning•Section 3-7, Radio Link Planning3-1 Planning a Link CX NetworkAs described in Section 1-5, the Link CX can be used to support a number of applications. However, the two most common configurations are point-to-point and mesh network. Point-to-point configurations (Figure 1-1) are easiest to plan and implement, as the radio links merely transmit industry-standard formatted data from one location to another. Mesh network configurations (Figure 1-7) use interWAVE StreamNet ATM Switches to create networks that feature high reliability, low maintenance cost, improved scalability, and enhanced interference mitigation.Both configurations use common point-to-point radio links, so the point-to-point radio link planning can also be applied to mesh network configurations. Generally, the common points to consider when planning a Link CX network are:•Line of Sight: Unlike some frequency bands, the Link CX radios must be within line of sight of each other. That is, the far-end antenna must be visible from the near-end antenna. If there are trees, buildings, mountains, or other obstructions between the two antennas, the Make sure that you read through this chapter, and make a copy of and fill out the Radio Link Planning Worksheet in Section 3-7 before you continue with the Link CX installation.
24 Link CX User Manual, Version ALink CXs on each end of the radio link will be unable to communicate with each other. Make sure the Link CX radios used in each radio link are within line of sight of each other. Refer also to the Fresnel Zone Clearance section that follows.•Fresnel Zone Clearance: There must be sufficient open space around the direct line of sight to minimize interference with the radio beam. At a minimum, 60% of the first Fresnel zone of the path should be clear.Even with clear line-of-sight, objects still may be near enough to the transmission path to cause problems. Obviously, objects that stand directly in the transmission path obstruct the beam, causing a drop in signal strength at the receiving end; in addition, objects and reflective surfaces that are in near proximity to the path can cause signal interference and attenuation of the received signal.Fresnel zones define the amount of clearance required for obstacles. These zones are series of concentric ellipsoid surfaces that surround the straight-line path between the two antennas. The first Fresnel zone is defined as the surface containing every point for which the distance from the transmitter to any reflection point on the surface and then on to the receiver is one-half wavelength longer than the direct signal path. The following equation shows that Fresnel zones are a function of the transmission frequency, path length, and location along the path:Where:Fl = First Fresnel zone radius in meters d1= Distance from transmitter to reflection point in kilometers d2 = Distance from reflection point to receiver in kilometers D = Length of direct signal path in kilometers f = Transmission frequency in GHz.An envelope at six-tenths of the first Fresnel zone (referred to simply as the Fresnel Zone Clearance) defines the minimum acceptable clearance of an obstacle (see Figure 3-1). The formula for the Fresnel Zone Clearance is shown after Figure 3-1.F1 17.3 d1d2fD------------ Fresnel Zones formula=
Installation Planning 25Where:Fl = First Fresnel zone radius in meters d1= Distance from transmitter to reflection point in kilometers D = Length of direct signal path in kilometers d2 = D - d1f = Transmission frequency in GHz.Figure 3-1 shows that the Fresnel zone radius is greatest at midpath. It is at this point that the required obstacle clearance is greatest. The equation given previously yields the 0.6F1 minimum beam clearance envelope values at midpath as shown in Table 3-1. Also use the equation to calculate the necessary minimum beam clearance envelope for other obstacles along the path, especially near both endpoints of the path. Figure 3-1 Fresnel Zone ClearanceDirect Path .6F1 Enveloped1 d2IW1002010.6F1 10.4 d1d2fD------------ Fresnel Zone Clearance formula=
26 Link CX User Manual, Version A•Multipath Fading: See Figure 3-2. Because a Link CX terminal typically transmits its stron-gest signals in a cone-shaped pattern, some of the signal may be reflected from a nearby building, from water under the signal path, or from other RF reflectors. This reflected signal can then be received by the far-end Link CX and superimposed on the main signal, usually degrading the signal strength. To avoid multipath fading, interWAVE recommends that you install the Link CX antenna on the back, rather than the front, of buildings to avoid multipath fading from water or other ground-level surfaces, and that you plan radio links away from nearby buildings. Table 3-1 Beam Clearance Envelope at MidpathPath Distance Midpath Minimum Beam Clearance Envelope (Note)2 km 7 m5 km 11 m10 km 15 m20 km 21 m32 km 27 m1 mile 20 ft3 miles 34 ft6 miles 48 ft12 miles 69 ft20 miles 88 ftNote: The minimum beam clearance envelope is defined by the radius around the direct path shown in Figure 3-1, within which there must be no obstacles.The Fresnel zone surrounds the direct signal path, so it affects objects to the side of the path as well as objects directly in the path.
Installation Planning 27•External Interference: Because the Link CX operates in an unlicensed band, interWAVE strongly recommends that you use a spectrum analyzer at both ends of planned radio links, with the receiving antenna as close to the proposed Link CX antenna mounting spot as possible. Use a polarized antenna, and scan for both horizontally- and vertically-polarized interfering radiation. If you find external interference in either of the two (High or Low) bands, configure the Link CX for the least-impacted band. Refer to Table 3-3 for the High and Low bands for the Link CX radio.Figure 3-2 Preventing Multipath Fading from Ground-Level SurfacesLine of SightTransmission PathIW086202B. Link CXs Mounted on Back of Building Eliminate Multipath FadingA. Link CXs Mounted on Front of Building Experience Multipath FadingLine of SightTransmission PathMultipathReflectionMultipathReflectionsBuildingBuildingBuildingBuilding
28 Link CX User Manual, Version A3-2 Site PlanningEach proposed Link CX terminal site requires a site survey and plan for the following:•Power: The Link CX radio requires a +/-21 to +/-60 VDC power source. Make sure required power supply is available before installing the Link CX. •Mounting Point: The Link CX is usually mounted on a vertical mast or pole mounted on a building or a tower. The Link CX mounting bracket can accommodate a 4.5- to 11.5-cm (1.75- to 4.5-in.) diameter mast or pole.When the Link CX is equipped with an external antenna, the antenna and the Link CX radio should be mounted so the factory-supplied 2 m (79 in.) can be used to connect the antenna to the Link CX.•Grounding and Lightning Protection: The Link CX radio requires adequate grounding and lightning protection. If the mounting point described above provides adequate lightning protection, the Link CX radio will still need a good earth ground to a bare-metal earth ground. Refer to Appendix 4 for detailed grounding and lightning protection recommendations. •Cable Routing: The Link CX DS-3 and/or Ethernet data cables connect associated external equipment to the Link CX radio. Before installation, procure cable ties and/or standoffs to route and to create service loops for these cables.•Physical Security: The Link CX radio is typically mounted high enough to prevent casual tampering. The Link CX radio is further protected by anti-tampering chassis screws that prevent most casual attempts to open the chassis.3-3 Planning Element and Network Management Ethernet LinksThe Link CX communicates with SNMP-based Element Management Systems and Network Management Systems over Ethernet communication links. Because the Link CX contains two independent switched Ethernet ports, each Link CX can be connected directly to an Ethernet switch or router, and colocated Link CXs can be cascaded. Figure 3-3 shows some common arrangements for the EMS and/or NMS Ethernet links.The cable run from the Ethernet switch or router to the Link CX must be 100 m (328 ft.) or less, and can be straight-through or crossover, because the Link CX Ethernet ports automatically detect the transmit and receive pairs and switch them if necessary. interWAVE sells 25 m (82 ft.), 50 m (14 ft.), and 100 m (328 ft.) Ethernet cables with the correct connectors for these links, as described in Section 1-4.6.Alternatively, when Link CXs are to be cascaded as shown in Figure 3-3 (B), interWAVE sells a 6 m (20 ft.) Ethernet cable with the correct connectors for the Link CX-to-Link CX links, as described in Section 1-4.6.Note that the EMS or NMS must be within eight or fewer Ethernet hops of the Link CX for proper communications.
Installation Planning 29Figure 3-3 Typical EMS/NMS Ethernet ConnectionsEthernet BackboneIW142202A. DS-3 Link CXs at Different LocationsEMS/NMSB. Colocated DS-3 Link CXsEMS/NMSSwitch/RouterEthernetC. Colocated Ethernet Link CXsEMS/NMSEthernetSwitch
30 Link CX User Manual, Version A3-4 Planning DS-3 LinksThe Link CX DS-3 versions use paired 75 Ohm cables with male TNC connectors for the transmit and receive data from external DS-3 equipment. interWAVE sells 25 m (82 ft.), 50 m (14 ft.), and 100 m (328 ft.) DS-3 cables with the correct connectors for these links, as described in Section 1-4.6.Alternatively, when a StreamNet ATM Switch is connected to the Link CX, interWAVE sells a 6 m (20 ft.) DS-3 cable with the correct connectors for this link, as described in Section 1-4.6.3-5 Power PlanninginterWAVE sells 25 m (82 ft.), 50 m (14 ft.), and 100 m (328 ft.) power cables with the correct connectors for Link CX power, as described in Section 1-4.6.
Installation Planning 313-6 Transmit Power PlanningThe Link CX normally uses a manually-set output power level. When Automatic Transmit Power Control (ATPC) is enabled, the far-end Link CX terminal provides feedback to the near-end Link CX to lower the transmit power to the lowest level required for clear data transmission.Transmit power can be attenuated by 40 dB for initial configuration and interference isolation. Also, a maximum transmit power level can be set (whether or not ATPC is enabled) to prevent interference with other RF receivers.3-6.1 Maximum Link CX Power OutputSince the Link CX can be ordered in a number of configurations, with different gains for each of the associated antennas, use the Table 3-2 to determine the maximum power output. Note that the factory-supplied external antenna attenuates the maximum power output by approximately 0.5 dB.3-6.2 Calculating the Required Transmit PowerThe Link CX will normally use the maximum transmit power listed in Table 3-2, but may need to be attenuated when there are other receivers beyond the remote Link CX terminal (for instance, in a mesh network). In this case, the professional installer must use the free-space calculation to determine the actual Maximum Transmit Power to prevent interference.Table 3-2 Maximum Power Output by Model ConfigurationModel Frequency Band Link Carries Antenna Max Tx PowerM100746-101M100747-101M100746-201M100747-2015.25-5.35 GHzDS-3 or Ethernet (45 Mbps)Integral -1 dBm +21 dBi = +20 dBm Average EIRPM100748-101M100749-101M100748-201M100749-2015.725-5.825 GHzDS-3 or Ethernet (45 Mbps)Integral +16 dBm +21 dBi = 37 dBm EIRPM100748-102M100749-102M100748-202M100749-202External, 61 cm (2 ft.)+16 dBm +28 dBi -0.5 dB = 43.5 dBm EIRPM100748-102M100749-102M100748-202M100749-202External, 122 cm (4 ft.)+16dBm +34.6dBi -0.5 dB = 50.1 dBm EIRP
32 Link CX User Manual, Version A3-7 Radio Link PlanningAs described in Section 1-4, each radio link requires one Link CX at each end of the link. Before you start installing your Link CXs, fill in the following information for both ends of the radio link:Table 3-3 Radio Link Planning WorksheetLink CX 1 - High Band Link CX 2 - Low BandInformation Common to Both Link CX RadiosRadio Link Name: Radio Link Information:Radio Link Polarization (pick one, must be the same for both): HORIZONTAL VERTICALRadio Link Payload (as ordered, must be the same for both): DS-3 Ethernet Information Unique to Each Link CX RadioModel Number(see Link CX Label & Table 1-1)M1007 _ _ - _ 0 _(high band)M1007 _ _ - _ 0 _(low band)Antenna Type (pick one)Integral61 cm (2 ft.)122 cm (4 ft.)Integral61 cm (2 ft.)122 cm (4 ft.)Radio Link Channel and Band Center Frequency (pick one pair, must be different)Channel 1 High Band, 5.3 GHz: Tx--5.322 GHz/Rx--5.262 GHz (default)Channel 1 Low Band, 5.3 GHz: Tx--5.262 GHz/Rx--5.322 GHzChannel 2 High Band, 5.3 GHz: Tx--5.338 GHz/Rx--5.278 GHzChannel 2 Low Band, 5.3 GHz: Tx--5.278 GHz/Rx--5.338 GHzChannel 1 High Band, 5.8 GHz: Tx--5.797 GHz/Rx--5.737 GHz (default)Channel 1 Low Band, 5.8 GHz: Tx--5.737 GHz/Rx--5.797 GHzChannel 2 High Band, 5.8 GHz: Tx--5.813 GHz/Rx--5.753 GHzChannel 2 Low Band, 5.8 GHz: Tx--5.753 GHz/Rx--5.813 GHzTransmit Attenuation(default = Disable) Enable Disable Enabled DisableMaximum Transmit Power(refer to Section 3-6.2) __ dBm __ dBmAutomatic Tx Power Control(refer to Section 3-6) Enable Disable Enabled Disable
Installation Planning 33IP Address (must be different, obtain from IP network planner) _ _ _ . _ _ _ . _ _ _ . _ _ _ _ _ _ . _ _ _ . _ _ _ . _ _ _Subnet Mask (obtain from IP network planner) _ _ _ . _ _ _ . _ _ _ . _ _ _ _ _ _ . _ _ _ . _ _ _ . _ _ _Default Gateway (obtain from IP network planner) _ _ _ . _ _ _ . _ _ _ . _ _ _ _ _ _ . _ _ _ . _ _ _ . _ _ _RSSI Alarm Level(default = -70 dBm) - __ dBm - __ dBmAlarm on Loss of DS-3 or Ethernet Input Signal Enabled Disable Enabled DisableLogin Name (up to 19 ASCII characters, including numbers and ! $ ‘*+-_)Login Password (8 - 19 ASCII characters, including numbers and ! $ ‘*+-_)Allow Login From IP Addresses(don’t forget Craft PC)Any (default) -OR-_ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ _Any (default) -OR-_ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ _SNMP Trap Community(default = public, up to 19 ASCII characters starting with an alpha character, including numbers and - _ .)Send SNMP Traps to_ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ _Read/Write Community(default = public, up to 19 ASCII characters starting with an alpha character, including numbers and - _ .)Allow Read/Write Access FromAny (default) -OR-_ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ _Any (default) -OR-_ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ __ _ _ . _ _ _ . _ _ _ . _ _ _Table 3-3 Radio Link Planning Worksheet (continued)Link CX 1 - High Band Link CX 2 - Low Band
34 Link CX User Manual, Version ARead-Only Community(default = public, up to 19 ASCII characters starting with an alpha character, including numbers and - _ .)Allow Read-Only Access From Any (default) -OR-_ _ _ . _ _ _ . _ _ _ . _ _ _Any (default) -OR-_ _ _ . _ _ _ . _ _ _ . _ _ _System Name(optional, up to 255 ASCII characters)System Contact Information(optional, up to 255 ASCII characters)System Location(optional, up to 255 ASCII characters)Table 3-3 Radio Link Planning Worksheet (continued)Link CX 1 - High Band Link CX 2 - Low Band
Installing the Link CX 35FourInstalling the Link CX 40000This chapter describes the physical installation of the Link CX. Each Link CX consists of an outdoor pole-mounted radio with integral antenna or optional external antenna. If so equipped, the Link CX radio is connected to the external antenna with a factory-supplied coaxial cable.This chapter covers the following topics:•Section 4-1, Before Installing, includes general guidelines, equipment unpacking, inventory and tools•Section 4-2, Initial Configuration, includes all the steps necessary to configure the Link CX radio before mounting it (and its optional external antenna) on the pole•Section 4-3, Mounting the Link CX, includes steps for installing the Link CX (and its optional external antenna) on the pole•Section 4-4, External Antenna Installation (Optional), includes optional external antenna installation steps•Section 4-5, Completing the Link CX Installation, describes installed Link CX cabling and grounding•Section 4-6, Aligning the Antenna, includes Link CX antenna alignment steps•Section 4-7, Acceptance Testing, includes Link CX acceptance testsThis chapter describes initial configuration and installation of the Link CX hardware. After completing this chapter, the installer should proceed to Chapter Five to perform a final configuration on the Link CX radio after hardware installation.For faster installation, make sure you have a filled-out copy of the Radio Link Planning Worksheet from Chapter Three before continuing with the rest of this chapter.This device must be professionally installed.
36 Link CX User Manual, Version A4-1 Before Installing4-1.1 General GuidelinesThe installation, maintenance, or removal of antenna systems requires qualified, experienced personnel. Link CX installation instructions have been written for such personnel.Since Link CX is easy to install, a previously installed Link CX can be conveniently moved to a new location. Re-deployment allows the user to meet the requirements of a changing system with minimal effort and expense. Thus, installation personnel should assume that the activities described in this chapter are not one-time procedures but will have to be repeated from time to time. This manual assumes that the site power and grounding have already been installed. This manual also assumes that the antenna mounting pole has been installed before installing the Link CX. When installing and aligning a Link CX radio or associated radio link, the user should always have on hand the required tools, test equipment and any other required miscellaneous installation devices and materials.interWAVE disclaims any liability or responsibility for the results of improper or unsafe installation practices.This device is to be exclusively used for fixed point-to-point operation with directional antennas.Before you continue with this installation, make sure you have a filled-out copy of the Radio Link Planning Worksheet found in Section 3-7.Before installing the Link CX radio, it is recommended that installation personnel read this chapter in its entirety. If installation personnel are unfamiliar with the radio components, we recommend reading Chapter One. After reading through the full installation procedure, installation personnel may proceed to the relevant sections in this chapter.The Link CX electronics have been designed to be maintenance free, and the outdoor components are very rugged. However, because of continued exposure to weather, it is recommended that qualified personnel inspect antenna systems once a year to verify proper installation, maintenance, and condition of equipment.
Installing the Link CX 374-1.2 Equipment and UnpackingEach Link CX radio is shipped with the Link CX User’s Manual on CD-ROM, and a separate box contains the optional 5.8 GHz external Antenna Mount Assembly, U-bolts and antenna with tube attachment. Unpack each box and examine the exterior of each unit for any visible damage. If visible damage is detected, immediately contact your sales representative or interWAVE Customer Support.The equipment shipped (Link CX radio with or without external antenna) depends on the specific purchase order as described in Table 1-1.4-1.3 Packing Lists and Orderable PartsEach packing carton is accompanied by a packing list. Verify the contents of the carton against the packing list. Regardless of the packing list parts described here, the shipped packing list is binding. Note the warranty sticker on the Link CX. The Link CX radio is sealed at the factory. Tampering with these seals voids the warranty.See Figure 4-1 for a picture of the orderable Link CX parts, and see Table 4-1 for a high-level description of the orderable parts.interWAVE suggests that the user retain at least one (1) of each packing carton with all its packing materials. In the event that it is necessary to return a unit, the user will have the required packing material for safe shipment.
38 Link CX User Manual, Version AFigure 4-1 Link CX Orderable Parts9A, 9B 106 7 85B5A1B341A2C2B2AIW093201(GraphicTBD)
Installing the Link CX 39Table 4-1 Link CX Radio Orderable PartsItem Qty Part Number Description See Also 1A 1 See Table 1-1 Link CX Radio, Integral Antenna Section 1-4.31B 1 See Table 1-1 Link CX Radio, External Antenna Section 1-4.32A 1 100607-001 Non-Adjustable Elevation Single Link CX Radio Bracket Section 1-4.42B 1 100680-001 Adjustable Elevation Single Link CX Radio Brackets Section 1-4.42C 1 100694-001 Adjustable Elevation Dual Link CX Radio Brackets Section 1-4.43 1 AC100008Optional 2 m (6.5 ft.) N-to-N External Antenna RF Cable (required for some 5.8 GHz Link CX models)Section 1-4.641TBDTBD61 cm (2 ft.)122 cm (4 ft.)Optional Single Polarization External Parabolic Antenna with Mounting BracketSection 1-4.65A 1100763-001100764-001100765-00125 m (82 ft.) 50 m (164 ft.) 100 m (328 ft.) DS-3 Payload Data Cables and Power Cable KitSection 1-4.65B 1100766-001100767-001100768-00125 m (82 ft.) 50 m (164 ft.) 100 m (328 ft.) 10/100 Ethernet Payload Data Cable and Power Cable KitSection 1-4.66 1 100655-001 6 m (19.7 ft.) Link CX-to-Link CX 10/100 Ethernet Crossover Cable Section 1-4.67 1 100588-0036m (19.7ft.) Dual 75Ohm DS-3 TNC-to-TNC StreamNet ATM Switch Ethernet Cable Section 1-4.68 1 100586-001 Optional 6 m (19.7 ft.) Craft PC 4-pin Circular-to-DB9 RS-232 CLI Cable Section 1-4.69A 1 TBDOptional Transtector Lightning Arrestor Kit used at the cable entry to the Power, DS-3 and Ethernet Equipment StructureAppendix 49B 1 TBDOptional Transtector Lightning Arrestor Kit used at the cable entry to the 10/100 Ethernet and Power Equipment StructureAppendix 410 1 100757-001 User Manual CD-ROM Preface
40 Link CX User Manual, Version A4-1.4 Installation Tools and MaterialsToolsThe user should have at least the following tools on hand before installing the Link CX radio:MaterialsRefer to Section 4-1.3 and collect the following materials: •For DS-3 models:•DS-3 coaxial cables to the Link CX.•Ethernet data interface cables to the Link CX.•For Ethernet models:•Ethernet data interface cables to the Link CX.•For all models:•Power cable to the Link CX.•Dual DS-3 coaxial cables to the StreamNet ATM Switch or other equipment.•Optional RS-232 cable to Craft PC command line interface. (Future option.)•Standoffs and/or tie wraps (or similar) for fastening cables.•Vinyl (or equivalent) electrical tape.•Butyl rubber amalgamating connector sealing tape.•Customer-supplied solid wire or tape (not braided) grounding wire.•Lightning arrestors.•Optional 2 W, 50 Ohm load with N-Type connector used during initial configuration of Link CXs with external antennas.Table 4-2 Required Installation ToolsTools Purpose13 mm (11/16 in.) and YY mm (XX in.) and RR mm (SS in.) torque wrenchTighten the pole mount assembly to the pole and tighten the alignment lockdown boltsOptical aid or compass (optional) For coarse antenna azimuth alignmentVertical level (optional) For coarse antenna elevation alignmentHand-held voltmeter, including cable with BNC adapter Fine-tune the antenna alignmentLarge Flat-Blade Screwdriver Tighten the steel band clamps, when required
Installing the Link CX 414-2 Initial ConfigurationinterWAVE strongly recommends that the installer configure the Link CX at a depot or on-site before it is mounted in its final location. This section includes instructions on how to configure the Link CX before it is installed.4-2.1 Connecting a Craft PC to the Link CXThe equipment used to configure the Link CX is a Craft PC with 10/100 Ethernet port and cable, equipped with any current web browser and Adobe Acrobat Reader software. Figure 4-2 shows how to connect the Craft PC and power to the Link CX for initial configuration.Perform the following steps:1(Only for Link CXs with external antennas.) When you are configuring a Link CX with an external antenna, connect the external antenna or a 2 W, 50 Ohm load to the antenna port. This prevents harm to the Link CX internal circuits should full RF power be applied without a load.2If necessary, use the instructions provided with your Craft PC operating system to change the Craft PC ethernet address to 10.0.0.1.3Turn off power to the Craft PC to prevent damage to the Ethernet port receive circuitry.4Using a factory-supplied ethernet cable, connect an Ethernet-port equipped Craft PC to the Link CX as shown in Figure 4-2.5MAKE SURE the antenna is pointing away from your work area before you apply power to the Link CX, and MAKE SURE you stay at least 2 m (79 in.) from the front of the antenna while the Link CX is connected to power.6Using a factory-supplied power cable, connect an external power supply to the Link CX as shown in Figure 4-2.7Turn on power to the Craft PC and verify that the Ethernet port is active. Note that the Link CX Ethernet switch will auto-detect transmit and receive pairs, and you should detect an Ethernet connection within a few seconds of port activation.The Link CX is now powered on and transmitting RF, and the Craft PC is now ready to log onto the Link CX internal web main page.Because you can expose yourself to harmful RF radiation any time the Link CX is powered up, do not stand within 2 m (79 in.) of the antenna during Link CX operation. The installer is responsible for ensuring that the antenna is mounted in a place inaccessible to the public.For faster configuration, make sure you have a filled-out copy of the Radio Link Planning Worksheet from Chapter Three before continuing with the rest of this section.
42 Link CX User Manual, Version A4-2.2 Logging In to the Link CX Built-In Web ServerAfter you have connected and powered up the Link CX and the Craft PC as described in Section 4-2.1, use the web browser on the Craft PC to log into the Link CX built-in web server as follows:8Launch the web browser per the manufacturer’s instructions.9Open the web page at ethernet address 10.0.0.2 (transmit low models) or 10.0.0.3 (transmit high models) in the web browser. If the web browser ethernet address has been changed, use the replacement ethernet address instead of 10.0.0.x..10 If the Link CX has not been configured for a login and password, continue with Step 11. If the Link CX has already been configured for a login and password, enter both and continue with Step 11.11 The web browser displays the Monitor Page, similar to the one shown in Figure 4-3. Note that the values shown for each of the parameters will vary, depending on the state of the Link CX.Figure 4-2 Link CX Configuration SetupIW093202Craft PCMil-TypeConnectorCAT-5 EthernetCableRJ-45 EthernetPortFrom +/-21 to+/-60 Vdc Supply
Installing the Link CX 43Figure 4-3 Typical 5.8 GHz Link CX Monitor Web Page
44 Link CX User Manual, Version A12 On the Monitor page, select the link for the Commission Radio page. The web browser displays the Commission Radio page, similar to the sample shown in Figure 4-4.13 Using the data entered on the filled-out copy of the Radio Link Planning Worksheet from Chapter Three, select the planned configuration choices available on this page, except the final Tx Attenuation and the Automatic Tx Power Control values. Enable the Tx Attenuation and disable the Automatic Tx Power Control for now. 14 Click Submit Changes to upload changes to the Link CX.15 On the Commission Radio page, select the link for the Commission Interfaces page. The web browser displays the Commission Manager Interfaces page, similar to the sample shown in Figure 4-5.16 Using the data entered on the filled-out copy of the Radio Link Planning Worksheet from Chapter Three, select the planned configuration choices available on this page.Figure 4-4 Typical 5.8 GHz Link CX Commission Radio Web PageThe Link CX is shipped with Tx Attenuation disabled. Enable Tx Attenuation until the rest of the Link CX configuration steps are completed.
Installing the Link CX 4517 Click Submit Changes to upload changes to the Link CX.18 On the Commission Manager Interfaces page, select the link for the Test page. The web browser displays the Test page, similar to the sample shown in Figure 4-6.19 On the Test page, select the BERT + Radio Loopback test, and select One Minute. Select Start Test to verify the internal Link CX circuitry before installation.When the BERT + Radio Loopback test is complete, the Link CX has been configured, and the internal signal generation, transmit, receive, and detecting circuitry of the Link CX has been tested. Continue with Step 18.20 On the Test page, select the link for the Commission Radio page. The web browser again displays the Commission Radio page, similar to the sample shown in Figure 4-4.21 On the Commission Radio page, set the Tx Attenuation to disabled. This causes the Link CX to transmit at the level set by the Maximum Transmit Power parameter.22 Disconnect power from the Link CX to prepare it for mounting in its final location.23 Disconnect the Craft PC from the Link CX.24 (Only for Link CXs with external antennas.) When you have configured a Link CX with an external antenna, disconnect the external antenna or 50 Ohm load from the antenna port. This makes it easier to mount the Link CX and the external antenna in their final locations.After completing this section, the Link CX radio is configured and partially tested, and is ready to install as described in Section 4-3.Do not stand within 2 m (79 in.) of the front of the antenna during Link CX operation to avoid harmful RF radiation.
46 Link CX User Manual, Version AFigure 4-5 Link CX Commission Manager Web Page
Installing the Link CX 47Figure 4-6 Link CX Test Web Page
48 Link CX User Manual, Version A4-3 Mounting the Link CXThe Link CX radio is a sealed unit that installs on a pole. When the Link CX is equipped with an integral antenna, there is no need to install an external antenna. When the Link CX is equipped with an external antenna, you will mount the Link CX as described in this section, then you will install the optional external antenna as described in Section 4-4.After completing the configuration steps in Section 4-2, continue with the following steps to mount the Link CX on a pole.4-3.1 Installing the Link CX Mounting Bracket25 Install the pole-mount bracket as described in the appropriate section below.A pole is not supplied with the Link CX and should be in place before attempting installation. The body performing the installation is the responsible for preventing any contact or induction with mains lines at any voltage.To comply with FCC RF exposure requirements, antennas used with Link CXs must be rigidly mounted on permanent outdoor structures to provide 2 m (79 in.) or more separation from all persons during Link CX operation. Installers should refer to Table 3-2 when installing factory-supplied antennas, or the contact the customer-supplied antenna manufacturer for applicable gain and type restrictions to ensure compliance.When the Link CX is to be installed with an external antenna, make sure that the Link CX and the antenna are mounted close enough to use the factory-supplied 2 m (6.5 ft.) RF cable to connect them. Also make sure that the Link CX and external antenna are not so close that they interfere with each other during antenna alignment.
Installing the Link CX 49Non-Adjustable Elevation Single Link CX BracketA See Figure 4-7. Assemble the two steel band clamps to the pole mount bracket.B Wrap the clamps around the pole and finger tighten their clamp screws. The bracket should be able to pivot around the pole, allowing horizontal alignment.C Install the pole-mount bracket.•When you are installing a Link CX with an integral antenna, use a compass or optical aid to coarsely align the pole mount bracket with the far-end antenna location. Continue with Section 4-3.2.•When you are installing a Link CX with an external antenna, position the bracket near enough to the planned antenna location so that the Link CX does not inter-fere with antenna alignment and so the factory-supplied 2 m (6.5 ft.) antenna cable can be connected to both units. Continue with Section 4-3.2.Adjustable Elevation Single Link CX BracketA See Figure 4-8. Assemble the two steel band clamps to the pole mount bracket.B Wrap the clamps around the pole and finger tighten their clamp screws. The bracket should be able to pivot around the pole, allowing horizontal alignment.C Install the pole-mount bracket. Use a compass or optical aid to coarsely align the pole mount bracket with the far-end antenna location.D Assemble the rest of the bracket parts as shown in Figure 4-8. Use a level to ensure that the coarse elevation is 0°. Continue with Section 4-3.2.Figure 4-7 Non-Adjustable Elevation Single Link CX BracketIW099201Pole MountBracketSteel BandClamps
50 Link CX User Manual, Version AAdjustable Elevation Dual Link CX BracketA Assemble the pole mount brackets and associated nuts, bolts, and washers on the pole as shown in Figure 4-9. Finger tighten the four nuts. The pole mount bracket assembly should be able to pivot around the pole, allowing coarse horizontal alignment.B Use a compass or optical aid to coarsely align the pole mount bracket assembly between the far-end antenna locations. C Tighten the four pole mount bracket assembly bolts to 20-25 foot-pounds (27-34 n.m).Figure 4-8 Adjustable Elevation Single Link CX BracketThe pole mount bracket assembly does not have to be closely aligned with either of the far-end antennas, as the Link CX mounting bracket assemblies allow a wide range of elevation and azimuth alignment.IW099202
Installing the Link CX 51Figure 4-9 Adjustable Elevation Dual Link CX Pole Mount Bracket AssemblyIW099203
52 Link CX User Manual, Version AD On each side of the pole mount bracket assembly, assemble the rest of the Link CX mounting bracket assembly parts as shown in Figure 4-10. E Finger tighten the six bolts on each Link CX mounting bracket assembly. Each Link CX mounting bracket assembly should be able to pivot around the pole and elevate up and down, allowing fine azimuth and elevation alignment. F Use a level to ensure that the coarse elevation for each Link CX mounting bracket assembly is 0°. G Continue with Section 4-3.2.Figure 4-10 Adjustable Elevation Dual Link CX Mounting Bracket Assembly (one side only)IW099204
Installing the Link CX 534-3.2 Attaching the Link CX to the Mounting BracketSelecting the Link CX Integral Antenna PolarizationWhen the Link CX is equipped with an integral antenna, how it is mounted determines the horizontal or vertical polarization. The Link CX mounting brackets are designed to preserve the selected polarization until the Link CX is removed from its bracket. •When the Link CX is equipped with an external antenna, skip this section and continue with Step 24.•See Figure 4-11. The Link CX case is embossed with an arrow indicating the integral antenna polarization. Point the arrow up for vertical, and sideways for horizontal polarization.Both ends of the radio link must be identically polarized. The planned polarization is available from the filled-out copy of the Radio Link Planning Worksheet from Chapter Three.Figure 4-11 Setting the Link CX Polarization -- Vertical Polarization ShownIW094201Rotate 90° forHorizontalPolarizationPolarizationArrow
54 Link CX User Manual, Version AAttaching the Link CX26 See Figure 4-11, Figure 4-12 and Figure 4-13.27 Orient the Link CX as shown in Figure 4-11, and align it with the mounting bracket as shown in Figure 4-12. Note that the four mounting studs on the Link CX should line up with the four slide clips on the bracket as shown in Figure 4-13.When the Link CX is equipped with an integral antenna, make sure that the antenna is properly polarized as described in the previous section.Figure 4-12 Attaching a 5.8 GHz Link CX to a Typical Mounting BracketIW099205
Installing the Link CX 5528 Secure the Link CX to the bracket using the four (4) slide clips on the bracket as shown in Figure 4-13.The Link CX is now connected to the mounting pole and coarsely aligned, if equipped with an integral antenna. Continue with Section 4-4.Figure 4-13 Locking the Slide ClipsIW099206Press in untilsnapped ontostud (x4)
56 Link CX User Manual, Version A4-4 External Antenna Installation (Optional)This section is only used when you are installing a Link CX with an external antenna. If you are installing a Link CX with an integral antenna, skip this section and continue with Section 4-5.Factory-Supplied AntennasThe factory-supplied antenna consists of a 61 cm (24 in.) or 122 cm (48 in.) solid parabolic reflector assembly, radome, band clamp, and Pole Mount. The Pole Mount is designed to attach the antenna to a vertical tower pipe of diameter 44 to 115 mm (1.75 to 4.5 in.). It also provides adjustment ranges of ±30°(fine) Elevation and ±20°(fine) Azimuth. For the factory-supplied antenna specifications, refer to Appendix 2.The Link CX is usually attached to the same pole as the external antenna, as mounting the Link CX close to the antenna preserves the low (0.5 dBm) attenuation of the factory-supplied antenna cable. Continue with Section 4-4.1 to install the factory-supplied antenna mounting bracket and the external antenna.Customer-Supplied Antennas4-4.1 Installing a Factory-Supplied 4 Foot (122 cm) Antenna Mounting BracketSite Planning29 For antenna mounting and planning dimensions, see Figure 4-14 and Table 4-3.30 The antenna is normally assembled with an elevation adjustment range of +50 degrees to -5 degrees. By inverting the mount, it can be assembled with a +5 degree to -50 degree range. In either configuration, the antenna centerline can be offset right or left, relative to the vertical mast pipe (see Figure 4-15) by inverting the Horizontal Tube Assembly.Installation, maintenance and removal of antenna systems requires qualified, experienced personnel. interWAVE installation instructions have been written for such personnel. interWAVE disclaims any liability or responsibility for the results of improper or unsafe installation practices.The Link CX may be shipped without an integral or external antenna. For instance, the customer may wish to use a larger external antenna for increased gain. If this is the case, mount the Link CX as detailed in Section 4-3, and mount the customer-supplied antenna as described in the manufacturer’s instructions.To comply with FCC RF exposure requirements, antennas used with Link CXs must be rigidly mounted on permanent outdoor structures to provide 2 m (79 in.) or more separation from all persons during Link CX operation. Installers should contact the antenna manufacturer for applicable gain and type restrictions to ensure compliance.
Installing the Link CX 57Figure 4-14 Four Foot (122 cm) AntennaTable 4-3 Four Foot Diameter Antenna Dimensions
58 Link CX User Manual, Version AUnpacking and Preparation31 Carefully unpack the reflector, mount, shroud (if any), radome (if any) and feed from the crate. For correct antenna performance, handle all components with care. Set aside the packaged feed and any shroud or radome. See Figure 4-16 through Figure 4-19.Caution: The reflector spinning has been formed to a very close-toleranced parabolic shape. Careful handling and assembly is required to avoid denting or deforming the reflector, which would degrade the antenna’s performance.32 Inspect for any damaged parts. See Table 4-4 through Table 4-7 for an inventory of the parts and hardware shipped with the antenna.Shroud AttachmentAttach the shroud assembly that is provided with high-performance antennas to the reflector. The installation procedure is covered by another instruction sheet supplied with the shroud. Note: Some models have the shroud factory installed.Figure 4-15 Mount ConfigurationTable 4-4 Contents List, Reflector Assembly
Installing the Link CX 59Table 4-5 Contents List, Feed AssemblyFigure 4-16 Mounting Hardware PackedFigure 4-17 Mounting Hardware Unpacked
60 Link CX User Manual, Version ATable 4-6 Contents List, Mount Assembly
Installing the Link CX 61Table 4-7 Contents List, Mount AssemblyFigure 4-18 Parabolic Reflector
62 Link CX User Manual, Version AMount Assembly and Attachment33 The reflector should be placed face down, either on the shroud or blocked up on packing lumber. Locate the Top and Bottom markings stenciled onto the back of the reflector.34 Loosely attach Top Support Angles to the Horizontal Tube Assembly as shown in Figure 4-20 and Figure 4-21.35 For desired mount configuration (see Figure 4-15), attach the Vertical Tube Assembly to the Horizontal Tube Assembly as shown in Figure 4-20 and Figure 4-21.36 Verify proper assembly of the elevation rod hardware as shown in Figure 4-22. Remove outer hardware and insert rod through elevation plate.Important: For elevation angles grater than ±20°, the Beveled Washers shown in Figure 4-22 must be used. However, beveled washers may be used for elevation angles greater than ±10°.37 Carefully place mount assembly onto antenna backring, taking care not to damage the reflector. Loosely fasten the Top Support Angles and the Elevation Support Angle to the antenna backring using 1/2” hardware as shown in Figure 4-20.38 Verify alignment of the Vertical Assembly with the vertical axis of the reflector and secure the Top Support Angles and the Elevation Support Angle to the ring.Figure 4-19 Unpacking the Radome
Installing the Link CX 63Figure 4-20 Antenna Mount AssemblyFigure 4-21 Antenna Mount Assembly
64 Link CX User Manual, Version AFeed InstallationFollowing the instructions provided with the feed assembly, install the feed in the reflector. See Figure 4-23 through Figure 4-27.Figure 4-22 Elevation Rod AssemblyFigure 4-23 Feed Horn Installation
Installing the Link CX 65Figure 4-24 Feed Horn Polarization MarkingsFigure 4-25 Parabola Rear View Showing Polarization Reference MarkersFigure 4-26 Feed Horn Installation
66 Link CX User Manual, Version ARadome InstallationMolded radomes (normally optional on standard antennas) should be installed following the instructions provided.Azimuth Adjustment Clamp/Shear Stop Installation39 Verify proper assembly of the azimuth clamp/shear stop clamp as shown in Figure 4-28 and Figure 4-29. Securely attach the shear stop clamp to the mast pipe as shown, orienting it as nearly as possible to the antenna boresight direction, and square to the mast axis. Note that the shear stop clamp used on the two foot antennas also provides the azimuth adjustment.40 Refer to Figure 4-14 for the position of the antenna centerline relative to the shear stop clamp. The clamp must be mounted to provide support during installation and azimuth adjustment.Figure 4-27 Feed Horn Installation for Vertical Polarized OperationFigure 4-28 Azimuth Clamp/Shear Stop Assembly
Installing the Link CX 67Antenna Hoisting and Installation41 Attach a hoist strap around the vertical assembly or the horizontal assembly as shown in Figure 4-30. Do not hoist by the elevation rod. Make sure that the vertical assembly is unob-structed where it will mount against the mast pipe.42 Attach tag lines and carefully lift the antenna into position, resting the vertical assembly on the shear stop clamp.43 Fasten the mount to the mast pipe with 1/2” U-bolts. The antenna must be free to rotate during azimuth adjustment, so tighten only enough to close the gap between the mast and vertical channel. Do not leave the antenna loose for any extended period of time, not even overnight.Figure 4-29 Azimuth Adjustment Clamp Assembly
68 Link CX User Manual, Version A44 Radome Panel Rotation -- Ensure that the radome drain and lock nut are oriented downward for proper drainage (refer to Figure 4-31). When finished, fasten the locking nut(s).Figure 4-30 Hoisting the AntennaFigure 4-31 Setting Radome Panel Rotation
Installing the Link CX 69Inspection and Maintenance45 Before leaving the installation, check that all hardware on the mount, shroud, radome, and feed is tight and that nuts are locked in place.46 Inspect the antenna at least once a year to check its condition and to insure safe operation and maintenance. Qualified personnel, knowledgeable and experienced in antenna installa-tions, are required for this inspection.Supplemental InformationTable 4-8 is provided for installers unfamiliar with adequate nut tightening procedures for use on stainless steel bolts, U-bolts, galvanized bolts or any bolts without the ASTM-A325 marking on the head. Disregard these recommendations when specific tightening requirements are given.Note: It is not recommended to reuse a palnut that has already been fully tightened or deformed in any way. It should be replaced with a new palnut.Weatherproofing the Type N Female Connector on FeedsRemove the protective cover from the end of the feed and mate the connectors, screwing the male connector firmly onto the feed.Important: After connecting the coaxial cable, wrap the Type N connector with the gray butyl rubber, squeezing it firmly around all joints to make a continuous seal. Finish the weatherproofing by wrapping the butyl rubber with several layers of black PVC tape (not supplied).Continue with Section 4-5 to complete the Link CX installation.Table 4-8 Nut Tightening Specifications
70 Link CX User Manual, Version A4-5 Completing the Link CX InstallationThe Link CX and associated antenna are now mounted on the pole, and coarse-aligned with the far-end antenna. Continue with the following steps to complete the Link CX installation.4-5.1 Mounting the Lightning ArrestorinterWAVE strongly recommends that you use a lightning arrestor, such as the Transtector Lightning Arrestor Kit, at the cable entry to the power, DS-3 and/or Ethernet equipment structure. 47 Install the lightning arrestor according to the manufacturer’s instructions, and according to the guidelines in Appendix 4 to lessen the chance of damage from lightning strikes.4-5.2 Routing the Data and Power Cables from the Lightning Arrestor48 Route cables from the lightning arrestor through the cable entry to the power, DS-3 and/or Ethernet equipment.Leave a minimum of 38 cm (15 inches) of service loop in the cables where they attach to the lightning arrestor. Avoid tight bends during cable routing and fastening.49 Connect the power, DS-3 and/or Ethernet cables to the power, DS-3 and/or Ethernet equip-ment and the lightning arrestor.50 Route power, DS-3 and/or Ethernet cables from the lightning arrestor to the Link CX. Using cable ties and/or standoffs, fasten these cables to the structure at 3 m (10 ft.) intervals. Leave a minimum of 38 cm (15 inches) of service loop in the cables where they attach to the Link CX and the lightning arrestor. Avoid tight bends during cable routing and fastening.51 Connect the power, DS-3 and/or Ethernet cables to the lightning arrestor.52 Connect the power, DS-3 and/or Ethernet cables to the Link CX. See Figure 4-1 and Table 4-1 for the locations and descriptions of the Link CX connectors.53 Check the LEDs for proper operation. See Figure 4-1 and Table 4-1 for the locations and descriptions of the Link CX LEDs.•When power is properly applied to the Link CX, the PWR/LCL ALARM LED will be on.The Link CX has two ethernet ports, and includes and internal ethernet switch. However, typical ethernet hubs and switches do not have spanning tree capability. MAKE SURE that you make only ONE ethernet connection from a hub or switch to the Link CX to prevent broadcast storms.When you apply power to the Link CX, it starts transmitting. Do not stand within 2 m (79 in.) of the front of the antenna during Link CX operation to avoid harmful RF radiation.
Installing the Link CX 71•Because the radio link has not yet been established, the RF LINK LED should be off.•When the DS-3 equipment is or is not transmitting data to the Link CX, the DATA LED should be on or off, respectively.•When the Ethernet equipment is transmitting data to the Link CX, the ENET 1 and/or ENET 2 LEDs should be on or flashing. When the Ethernet equipment is not transmit-ting data to the Link CX, the ENET 1 and/or ENET 2 LEDs should be off or flashing as local data is received.If any of these conditions is not true, troubleshoot the associated equipment and cables.4-5.3 Grounding the Link CX and AntennaThe Link CX and the optional external antenna have grounding lugs. Make sure they are connected to a good earth ground using the guidelines in Appendix 4.54 Following the guidelines in Appendix 4, connect a customer-supplied solid wire or tape (not braided) grounding wire to the grounding lug on the back of the Link CX. See Figure 4-32 for the grounding lug location.Connect the other end of this cable to a proper grounding point.
72 Link CX User Manual, Version A55 If the Link CX is equipped with an external antenna, follow the guidelines in Appendix 4 and connect a customer-supplied solid wire or tape (not braided) grounding wire to the grounding lug on the back of the antenna.Connect the other end of this wire to a proper grounding point.4-5.4 Sealing the Data and Power Cable ConnectorsThe cables that are terminated outdoors must be sealed at each exposed end to prevent moisture incursion and damage. For all exposed connectors, including those between an external antenna and the Link CX, perform the following:56 Wrap each connector with vinyl or plastic electrical tape. 57 Wrap the vinyl or plastic electrical tape with butyl rubber amalgamating tape to prevent moisture from permeating the connector.58 Wrap the butyl rubber amalgamating tape with vinyl or plastic electrical tape.Figure 4-32 Connecting an Earth Ground to the Link CXIW094202To Earth GroundGroundingLugCustomer-SuppliedGrounding Wire or Tape
Installing the Link CX 73Continue with Section 4-6 to fine tune the antenna’s azimuth and elevation.4-6 Aligning the AntennaThis section includes steps used to fine tune the antenna alignment using RSSI as measured using a voltmeter. This part of the installation procedure is most easily accomplished with installers at each end of the radio link who are in communication with one another. When you are aligning a Link CX with an integral antenna on a single adjustable elevation pole mount, continue with Section 4-6.1. When you are aligning a Link CX with an integral antenna on a dual adjustable elevation pole mount, continue with Section 4-6.2. When you are aligning a Link CX with an external antenna, continue with Section 4-6.3. 4-6.1 Integral Antenna on a Single Adjustable Elevation MountPerform Step 57 through Step 62 on the local radio. Then, repeat these steps for the remote radio. See Figure 4-8 for the Single Pole Mount illustration.59 Remove the cap from the BNC connector of the remote antenna. Attach the hand-held volt-meter and BNC test lead to the test point.60 Fine Azimuth Alignment -- Rotate the Link CX mounting bracket on the pole until the proper azimuth alignment is achieved. Torque the steel band clamps on the single Link CX non-adjustable elevation pole mount to RR foot-pounds (SS n.m). Peak the alignment for maximum voltage at the remote antenna. Expected voltage is more than +1 VDC. The adjust-ment should be slowly tuned through the peak, and reset at the absolute maximum before tightening the straps.61 Fine Elevation Alignment -- Rotate the Link CX mounting bracket until the proper elevation alignment is achieved. Torque the two elevation locking bolts to 20 to 25 foot-pounds (27 to Failure to follow this antenna alignment procedure may damage your equipment and may render the radio unusable. Read through the entire procedure before attempting adjustment. Contact interWAVE with any questions.When you apply power to the Link CX, it starts transmitting. Do not stand within 2 m (79 in.) of the front of the antenna during Link CX operation to avoid harmful RF radiation. The Link CX with integral antenna is normally mounted on one of the adjustable elevation pole mounts to allow most accurate alignment and best system gain. If you are attempting to align a Link CX with integral antenna on a non-adjustable pole mount, adapt the following procedure, or contact interWAVE for fully-adjustable mounts.
74 Link CX User Manual, Version A34 n.m). Peak the alignment for maximum voltage at the remote antenna. Expected voltage is more than +1 VDC. The adjustment should be slowly tuned through the peak, and reset at the absolute maximum before tightening the bolts.62 Disconnect the hand-held voltmeter and BNC test lead from the RSSI port.63 Finger-tighten the RSSI port cap to seal the Link CX case.64 Recheck the Link CX LEDs. See Figure 4-1 and Table 4-1 for the locations and descriptions of the Link CX LEDs.•When power is properly applied to the Link CX, the PWR/LCL ALARM LED will be on.•Because the radio link has been established, the RF LINK LED should be on.•When the DS-3 equipment is or is not transmitting data to the Link CX, the DATA LED should be on or off, respectively.•When the Ethernet equipment is transmitting data to the Link CX, the ENET 1 and/or ENET 2 LEDs should be on or flashing. When the Ethernet equipment is not transmit-ting data to the Link CX, the ENET 1 and/or ENET 2 LEDs should be off.If any of these conditions is not true, troubleshoot the associated equipment and cables.The Link CX is now mounted and aligned. Continue with Section 4-7 for acceptance tests.4-6.2 Integral Antenna on a Dual Adjustable Elevation MountPerform Step 63 through Step 68 on the local radio. Then, repeat these steps for the remote radio. See Figure 4-10 for the Dual Pole Mount illustration.65 Remove the Link CX cap from the BNC connector of the remote radio. Attach the hand-held voltmeter and BNC test lead to the test point.66 Fine Azimuth Alignment -- Rotate the Link CX on its mounting bracket until the proper azimuth alignment is achieved. Torque the four small azimuth locking bolts to 4 to 6 foot-pounds (5.5 to 8 n.m). Peak the alignment for maximum voltage at the remote antenna. Expected voltage is more than +1 VDC. The adjustment should be slowly tuned through the peak, and reset at the absolute maximum before tightening the bolts.67 Fine Elevation Alignment -- Rotate the Link CX mounting bracket until the proper elevation alignment is achieved. Torque the two large elevation locking bolts to 20 to 25 foot-pounds (27 to 34 n.m). Peak the alignment for maximum voltage at the remote antenna. Expected voltage is more than +1 VDC. The adjustment should be slowly tuned through the peak, and reset at the absolute maximum before tightening the bolts.Alignment for each antenna should be alternated at least twice before confirming the final setting.Alignment for each antenna should be alternated at least twice before confirming the final setting.
Installing the Link CX 7568 Disconnect the hand-held voltmeter and BNC test lead from the RSSI port.69 Finger-tighten the RSSI port cap to seal the Link CX case.70 Recheck the Link CX LEDs. See Figure 4-1 and Table 4-1 for the locations and descriptions of the Link CX LEDs.•When power is properly applied to the Link CX, the PWR/LCL ALARM LED will be on.•Because the radio link has been established, the RF LINK LED should be on.•When the DS-3 equipment is or is not transmitting data to the Link CX, the DATA LED should be on or off, respectively.•When the Ethernet equipment is transmitting data to the Link CX, the ENET 1 or ENET 2 LEDs should be on or flashing. When the Ethernet equipment is not transmit-ting data to the Link CX, the ENET 1 and/or ENET 2 LEDs should be off.If any of these conditions is not true, troubleshoot the associated equipment and cables.The Link CX is now mounted and aligned. Continue with Section 4-7 for acceptance tests.4-6.3 External Antenna on Antenna-Specific MountPerform Step 69 through Step 79 on the local radio. Then, repeat these steps for the remote radio. See Figure 4-14 for the antenna assembly and Pole Mount illustration.Normally the antenna is aligned by performing azimuth and elevation adjustments and elevation adjustments as necessary until the peak signal is obtained. It may be helpful to re-peak one adjustment before finalizing or locking down the other.Warning: Damage to the antenna can occur if azimuth or elevation adjustments are attempted without loosening the proper connections as described in the following steps.71 Remove the BNC cap from the RSSI connector of the remote radio. Attach the hand-held voltmeter and BNC test lead to the test point.72 Be sure the mast pipe U-bolts are just loose enough to allow mount rotation while main-taining complete contact between the mount and the mast pipe.73 Turn the long stainless steel azimuth screws against the mounting channel. By alternately turning one azimuth adjustment screw out and the other in, the antenna can be rotated to the desired azimuth angle. Approximately one turn changes the azimuth direction by 1°. Avoid adjusting the antenna beyond the ±5° provided by the azimuth clamp as this can damage the adjusting hardware. Fasten the antenna to the mast pipe and reposition the clamp if needed.Note: By securing the mount to the mast pipe and realigning the azimuth clamp with the antenna boresight, more reliable and precise azimuth adjustments can be achieved.After all adjustments are made, tighten both of the azimuth screws against the channel and secure with the lock nuts provided.74 Tighten the mast pipe U-bolts while maintaining the peak signal by alternating from left to right in 1/4 turn intervals.
76 Link CX User Manual, Version A75 Insure that both of the bolts connecting the mount to the Top Support Angles and the pivoting Elevation Angle (refer to Figure 4-20 and Figure 4-22) are just loose enough to allow resisted rotation.76 Back the outer nuts on the elevation rod away from the bottom mount plate to allow some fine adjustment range.77 Turn the inside nut (with flat washer) on the elevation rod to adjust the elevation angle. Approximately five turns changes the elevation by 1°. Remember, for elevation greater than 20°, install the two beveled washers as shown in Figure 4-22.78 After all adjustments are made, lock the nut against the bottom mount plate. Tighten the angle pivot bolt and support bracket bolts to the specifications listed in Table 4-8.Important: Be sure to tighten all hardware after final adjustments and insure that split lockwashers, palnuts, or jam nuts are used where provided.79 Disconnect the hand-held voltmeter and BNC test lead from the RSSI port.80 Finger-tighten the RSSI port cap to seal the Link CX case.81 Recheck the Link CX LEDs. See Figure 4-1 and Table 4-1 for the locations and descriptions of the Link CX LEDs.•When power is properly applied to the Link CX, the PWR/LCL ALARM LED will be on.•Because the radio link has been established, the RF LINK LED should be on.•When the DS-3 equipment is or is not transmitting data to the Link CX, the DATA LED should be on or off, respectively.•When the Ethernet equipment is transmitting data to the Link CX, the ENET 1 or ENET 2 LEDs should be on or flashing. When the Ethernet equipment is not transmit-ting data to the Link CX, the ENET 1 and/or ENET 2 LEDs should be off.If any of these conditions is not true, troubleshoot the associated equipment and cables.Alignment for each antenna should be alternated at least twice before confirming the final setting.
Installing the Link CX 774-7 Acceptance TestingThis section describes the tests used to verify that the Link CX data input circuitry, near-end Link CX radio, radio link, and far-end Link CX radio are installed properly and operating correctly.82 Verify that the physical installation is correct. Use Table 4-9 to sign off the individual checks.Table 4-9 Physical Installation ChecklistChecklist Item Verified Inspector DateIs the mounting pipe securely connected to the mounting structure?Is the Link CX securely connected to the mounting pipe?If equipped, is the external antenna securely connected to the mounting pipe?Is the lightning protection above the Link CX and antenna properly grounded?Is the Link CX properly grounded?If equipped, is the external antenna properly grounded?Is the lightning arrestor at the entry to the equipment enclosure properly grounded?Is all cabling to the Link CX properly routed (no sharp bends and properly attached)?Are all exposed connectors properly sealed against moisture?Are all unused connectors capped off or otherwise sealed against moisture?Is the internal or external antenna polarization correct (as indicated on the back of the unit)?
78 Link CX User Manual, Version A83 Verify that the electrical connections are correct. Use Table 4-10 to sign off the individual checks.The next series of acceptance tests requires you to log in to the built-in web server with a computer equipped with a web browser. 84 Connect your computer to the Link CX through the Ethernet equipment connected to the ETHERNET 1 or ETHERNET 2 port.85 Log in to the Link CX built-in web server to display the Monitor page as described in Section 4-2.2.86 Make sure the Automatic Tx Power Control indicated in the lower half of the Monitor page is set to Disabled.87 Record the RSSI indicated at the top of the Monitor page. Save this number for later troubleshooting.Table 4-10 Electrical Connection ChecklistChecklist Item Verified Inspector DateIs the proper voltage supplied to the Link CX (PWR/LCL ALM LED on)?Is the Link CX receiving signal from the radio link (RF LINK LED on)?When the Link CX is connected to DS-3 equipment, is the Link CX receiving the expected signal (DATA LED on)?When the Link CX is connected to Ethernet equipment on port ETHERNET 1, is the Link CX receiving the expected signal (ENET 1 LED on or flashing)?When the Link CX is connected to Ethernet equipment on port ETHERNET 2, is the Link CX receiving the expected signal (ENET 2 LED on or flashing)?
Installing the Link CX 7988 Go to the Test page and verify that the Link CX passes the tests in Table 4-11.When all of the acceptance tests in this section have been completed and all Checklist items have been verified, the Link CX radio link has been verified. The Inspector marks for all tested items constitute acceptance of the Link CX equipment and the associated radio link.Table 4-11 Internal Circuit and Radio Link ChecklistChecklist Item Verified Inspector DateDoes the Link CX input circuitry and DS-3/Ethernet cabling work properly? (Set up Local + Remote Loopback and verify that the DS-3/Ethernet equipment is receiving the looped-back signal it is transmitting to the Link CX.)Does the Link CX radio circuitry work properly? (Set up Radio Loopback and verify that the DS-3/Ethernet equipment is receiving the looped-back signal it is transmitting to the Link CX.)Do the near-end and far-end Link CX radio circuits and radio paths work properly? (Set up BER Test and verify that the near-end Link CX is receiving the looped-back BER test signal it is transmitting to the far-end Link CX.)Does the end-to-end radio link work properly? (Select No Test and verify that the DS-3/Ethernet equipment at both ends of the radio link are receiving the signal transmitted to it by the remote DS-3/Ethernet equipment.)
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Final Link CX Setup 81FiveFinal Link CX Setup 50000The user is required to finish configuring the Link CX after physical installation. The Link CX includes a built-in HTML-based web server, which includes configuration, operating, monitoring and test pages. This web server can be accessed locally using a Web browser on a Craft PC, or remotely using any Web browser on the same Ethernet network as the Link CX. The initial configuration has already been done using a Craft PC at the Link CX site, and all other operation and maintenance tasks can be performed remotely or locally, as required.This chapter deals only with final Link CX setup using a Craft PC, and provides step-by-step configura-tion instructions.Post Acceptance Test ConfigurationThis section includes instructions on how to finish the Link CX configuration after it is installed, as described in Chapter Four. The Link CX should be in the following state:•Powered on.•Antenna aligned with far end antenna.•Acceptance tested.•No loopbacks or other tests active.•Carrying, or capable of carrying, payload data.•Transmit attenuation disabled.•Transmitting at minimum required transmit power (Automatic Tx Power Control disabled, unless required).This section assumes that the Link CX has already been installed and acceptance-tested as described in Chapter Four. If all the steps in Chapter Four have not been completed, complete them before starting this section.
82 Link CX User Manual, Version AFinal Link CX ConfigurationObtain a copy of the information entered in Table 3-3, Radio Link Planning Worksheet, and continue with the following steps:1Record the RSSI level from Step 85 in Chapter Four for future reference. The Step 85 value is the RSSI level with Automatic Tx Power Control disabled.2Connect your computer to the Link CX through the Ethernet equipment connected to the ETHERNET 1 or ETHERNET 2 port.3Log in to the Link CX built-in web server to display the Monitor page as described in Section 4-2.2.4Go to the Test page, and verify that No Test is selected.5Go to the Commission Radio page, and verify that the entries on this page match the entries in Table 3-3, Radio Link Planning Worksheet. Make sure the Tx Attenuation is set to No attenuation, and that Automatic Tx Power Control is set to Enable.6Go to the Commission Manager Interfaces page, and verify that the entries on this page match the entries in Table 3-3, Radio Link Planning Worksheet. You can upgrade the login security of the Link CX at this time. If you want to restrict access to the Link CX, consider the following:•If the Link CX does not have a Login Name and Password, you can assign one now.•If the Link CX allows login from any IP address, you may want to restrict login to only one or two IP addresses. MAKE SURE the Craft PC IP address is included if you select this option.•If the Link CX is set to broadcast SNMP traps to the Public community, you can restrict broadcasts to a different community.•If the Link CX is set to broadcast SNMP traps to multiple IP addresses, you can restrict broadcasts to fewer IP addresses.•If the Link CX is set to allow read-write access from the Public community, you can restrict read-write access to a different community.•If the Link CX is set to allow read-write access from any or multiple IP addresses, you can restrict read-write access to fewer IP addresses.•If the Link CX is set to allow read-only access from the Public community, you can restrict read-only access to a different community.•If the Link CX is set to allow read-only access from any IP address, you can restrict read-only access to fewer IP addresses.7When required, make any security upgrades as described in Step 6.The Link CX is now fully configured, tested, and operational, and should continue to operate unattended. Continue with Chapter Six for monitoring and trend analysis, and refer to Chapter Seven for troubleshooting information.
Monitoring and Trend Analysis 83SixMonitoring and Trend Analysis 60000Each Link CX and radio link can be monitored through either the built-in Web server or SNMP agent interfaces.6-1 Built-In Web Server InterfaceA subset of the SNMP-accessible statistics is available through the Web server interface connected to a web browser over an Ethernet link. These statistics can be read by logging in to display the Monitor page, as shown in Appendix 3. Statistics can be repeatedly sampled using the Web browser reload or refresh feature. The easiest indicator to monitor is the RSSI. Keep a record of the RSSI levels measured in Step 87 in Chapter Four. The Step 87 value is the RSSI level with Automatic Tx Power Control disabled (transmit-ting at maximum power).A properly designed radio link with a 20 dB or greater fade margin should indicate receive levels in the area of -60 dBm at Link CX sites. The accuracy of the indicated RSSI is approximately ±5 dB over a range of -90 dBm to -65 dBm.6-2 SNMP Network and Element Management SystemsAll monitored statistics are available through SNMP queries. In addition to MIB-II variables, product-specific variables are available through the Link CX enterprise MIB, which can be retrieved via FTP from F:/PUB/link_cx.mib (text file) in the Link CX file system. Most commercial SNMP NMSs and EMSs have the ability to sample variables over time and display trends and raise alarms based on defined thresholds. In addition, applicable SNMP traps are supported and can be used to raise alarms on the NMS and/or EMS.Any standard SNMP NMS or EMS can be used to monitor and control the Link CX network and individual Link CX radios.The Link CX has an enterprise MIB provided in standard ASCII format, which can be accessed for printing. When a software upgrade is performed, the self-extracting file places all directories and associated files necessary for the upgrade in a location specified by the operator at the time the self-extracting file is executed. One of the directories created is /PUB, which contains the printable enterprise ASCII text MIB file named link_cx.mib.The enterprise MIB file is also stored in FLASH memory on the Link CX in F:/PUB. A copy of the link_cx.mib file can be extracted from the Link CX using an ASCII FTP file transfer.
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Troubleshooting the Link CX 85SevenTroubleshooting the Link CX 70000This chapter explains how to troubleshoot a Link CX and associated radio link using the LEDs, a local or remote Web browser, or any other method. This chapter includes:•Section 7-1, Troubleshooting Tables•Section 7-2, Using the Link CX LEDs•Section 7-3, Using RSSI•Section 7-4, Using a Web Browser7-1 Troubleshooting TablesThis section includes a troubleshooting table for different symptoms:Table 7-1 Symptoms and Probable CausesSymptoms Probable CauseNo response from Link CX, No payload data being transmittedPower loss to Link CX, New obstructions (leafy trees and/or buildings, for example), Antenna no longer in alignment, Damaged cables, Defective transmission equipment Reduced RSSI, High BER, Reduced payload data transmission rateNew obstructions (leafy trees and/or buildings, for example), Antenna no longer in alignment, Damaged or degraded cables, New interferers (multipath reflections from flooded fields or new buildings, or new consumer applications, for example)Intermittent transmissionsATPC unable to block a frequency hopping transmitter or other intermittent interferer -- disable ATPC
86 Link CX User Manual, Version A7-2 Using the Link CX LEDsLink CX operation can be monitored using the LEDs. The LEDs show general radio link status at a glance. See Figure 1-3 for LED locations on the Link CX radio. The LEDs operate in the following modes.7-3 Using RSSI When you connect a voltmeter with BNC adapter to the Link CX RSSI port, you can measure an indication of the received RF signal level. When the Receive Level falls below -70 dBm, see Table 7-1 for a list of possible causes.7-4 Using a Web BrowserAs described in Appendix 3, most of the Link CX configuring, operating, and maintenance are performed using the Link CX Web pages. Use the error indications in the web server interface and Table 7-1 to troubleshoot alarm indications.Table 7-2 LEDs and Alarm Indication ModesLED Normal State Alarm StatePWR/LCL ALM ON -- Power on and no alarm Flashing -- Local alarmOFF -- Power off RF LINK ON -- Receive RF OK OFF -- Receive radio link alarmDATA ON -- DS-3 input OK OFF -- DS-3 input LOSENET 2 ON -- Ethernet input OKFlashing -- Receiving Ethernet data OFF -- No Ethernet input ENET 1 ON -- Ethernet input OKFlashing -- Receiving Ethernet data OFF -- No Ethernet input Make sure you replace the Link CX RSSI connector cover when done troubleshooting the radio link.
Interface Cable Pinouts 87Appendix 1Interface Cable Pinouts 10000A1-1 DS-3 CableA1-2 Ethernet Data CableTable A1-1 DS-3 Cable (100587-00X)Link CX IN/OUT TNC Connectors Wire Color DS-3 Equipment BNC PortPin Function Function Pin1 DATA IN -- TX 1Shield GND Foil GND Shield2 DATA OUT -- RX 2Shield GND Foil GND ShieldTable A1-2 10/100 Ethernet Data Cable (100652-00X)Link CX ETHERNET 1/2 Connectors Wire Color Ethernet Equipment RJ-45 PortPin Function Function Pin1 RX+ White/Orange TX+ 12 RX- Orange TX- 23 TX+ White/Green RX+ 34 TX- Green RX- 6IW099208IW099209
88 Link CX User Manual, Version AA1-3 DC Power CableA1-4 Ethernet Crossover CableTable A1-3 DC Power Cable (100653-00X)To Link CX POWER (4-pin Circular) Wire Color To DC Power SupplyPin Function Function Wire1 -V in White -V out White2----RS-232 TX--3----RS-232 RX--4 +V in Red RS-232 GND RedTable A1-4 10/100 Ethernet Crossover Cable (100655-001)Link CX ETHERNET 1/2 Connectors Wire ColorLink CX ETHERNET 1/2 ConnectorsPin Function Function Pin1 RX+ White/Orange TX+ 32 RX- Orange TX- 43 TX+ White/Green RX+ 14 TX- Green RX- 2IW099210IW099212
Interface Cable Pinouts 89A1-5 External Antenna CableA1-6 RS-232 Craft Cable Table A1-5 Antenna Cable (AC100008)Link CX N-Type Connector Wire Color Antenna N-Type ConnectorPin Function Function Pin1TX/RX -- TX/RX 1Shield GND -- GND ShieldTable A1-6 RS-232 CLI Craft PC Cable (100586-001)To Link CX TEST (4-pin Circular) Wire Color To Craft PC Serial DB-9 PortPin Function Function Pin1N/C -- N/C --2 RS-232 RX Red RS-232 TX 33 RS-232 TX Black RS-232 RX 24 RS-232 GND Yellow RS-232 GND 5IW099213IW099207
90 Link CX User Manual, Version AA1-7 StreamNet ATM Switch CableTable A1-7 StreamNet DS-3 Cable (100588-003)Link CX IN/OUT TNC Connectors Wire Color StreamNet DS-3 TNC PortPin Function Function Pin1 DATA IN -- TX 1Shield GND Foil GND Shield2 DATA OUT -- RX 2Shield GND Foil GND ShieldIW099211
Technical Specifications 91Appendix 2Technical Specifications 20000 A2-1 Link CX RadioTable A2-1 Link CX-DSX DS-3 or Ethernet Version (5.3 GHz)GeneralFrequency Range 5.25-5.35 GHzCompliance (USA) FCC Rules Part 15.407, U-NIICapacity Full-duplex DS-3, per Bellcore GR-499-CORE, or45 Mbps Ethernet, per IEEE 802.3Emission Bandwidth (at 26 dB) 13.9 MHzChannel Center Frequencies•Channel 1 (Tx Low/Rx High)•Channel 1 (Tx High/Rx Low)•Channel 2 (Tx Low/Rx High)•Channel 2 (Tx High/Rx Low)Transmit--5.262 GHz/Receive--5.322 GHzTransmit--5.322 GHz/Receive--5.262 GHzTransmit--5.278 GHz/Receive--5.338 GHzTransmit--5.338 GHz/Receive--5.278 GHzModulation Type 16 QAMTransmitterMaximum RMS Power Output -1.0 dBmPower Output Stability +/- 2 dBFrequency Stability +/- 5 ppmTransmit Duty Cycle 100%Emissions Mask & Spurious and Harmonic Output Per FCC CFR 47 Part 15.407Channel Frequency Selection Software-controlledAutomatic Tx Power Control (ATPC) Maintains a constant Carrier-to-Noise Ratio at both ends of a link, operator enabled ON or OFFTransmitter Attenuation Range 0-30.0 dB in 1 dB steps, and Mute 40 dB, operator controlled
92 Link CX User Manual, Version AReceiverType Double HeterodyneError Correction FEC Reed Solomon DecodingSensitivity at 10-6 BER -78 dBm state guaranteedTypical Unfaded BER 10-10Frequency Stability +/- 5 ppmChannel Frequency Selection Software-controlled Maximum Receive Level without Receiver Degradation -35 dBmMaximum Receive Level without Receiver Damage -30 dBmDS-3 InterfaceType Full-duplex DS-3, per Bellcore GR-499-CORELine Rate 44.736 MbpsLine Code B3ZSTx and Rx Electrical Interfaces 75 Ohm unbalancedTx and Rx Physical Connectors Female TNC coaxial with grounded outer conductorEthernet InterfacesNumber Two, with independent transmit and receive pair sensingType Full-duplex 10/100 Base-T per IEEE 802.3Line Rate 45 MbpsMax Distance between CPE and Link CX 100 m (328 ft.)Electrical Interfaces 100 Ohm UTPPhysical Connectors Female four-pin CircularExternal Antenna to Link CX Antenna Port (Optional)Connector Type 50 Ohm Coaxial N-Type FemaleAntenna Port Return Loss >=12 dBOther InterfacesCraft Port Male four-pin Circular, RS-232 asynchronous data port (TXD, RXD, GND)Table A2-1 Link CX-DSX DS-3 or Ethernet Version (5.3 GHz) (continued)
Technical Specifications 93RSSI Female BNC, DC voltage level proportionate to Received Signal StrengthPower RequirementsDC Source +/-21 to +/-60VDCPower Consumption 30 watts nominalUndervoltage Protection Circuit > +/- 18 VDC to power up the Link CXPhysical Connector Male four-pin CircularEnvironmentalAmbient Temperature Range•Operational•Storage-33 to +60°C (-27 to +140°F)-40 to +85°C (-40 to +185°F)Relative Humidity•Operational•Storage100%, all weather protection95%, noncondensingAltitude•Operational•Storage15,000 ft. AMSL (4,500m)50,000 ft. AMSL (15,000m)MechanicalHeight (HxWxD)•With External Antenna•With Integral Connector30 x 30 x 10 cm (12 x 12 x 4 in.)30 x 30 x 10.6 cm (12 x 12 x 4.25 in.)Weight•With Integral Antenna•With External Antenna Connector(TBD) kg ( lb.); Shipping Weight: kg ( lb.)(TBD) kg ( lb.); Shipping Weight: kg ( lb.)Table A2-1 Link CX-DSX DS-3 or Ethernet Version (5.3 GHz) (continued)
94 Link CX User Manual, Version ATable A2-2 Link CX-DSX DS-3 or Ethernet Version (5.8 GHz)GeneralFrequency Range 5.725-5.825 GHzCompliance Complies with FCC Ruling Part 15.247Capacity Full-duplex DS-3, per Bellcore GR-499-CORE, or45 Mbps Ethernet, per IEEE 802.3Emission Bandwidth 16 MHzChannel Center Frequencies•Channel 1 (Tx Low/Rx High)•Channel 1 (Tx High/Rx Low)•Channel 2 (Tx Low/Rx High)•Channel 2 (Tx High/Rx Low)Transmit--5.737 GHz/Receive--5.797 GHzTransmit--5.797 GHz/Receive--5.737 GHzTransmit--5.753 GHz/Receive--5.813 GHzTransmit--5.813 GHz/Receive--5.753 GHzModulation Type 16 QAMFactory-Supplied Coaxial Cable 2 m (6.6 ft.) N-Type Male to N-Type MaleTransmitterMaximum RMS Power Output +16.0 dBmPower Output Stability +/- 2 dBFrequency Stability +/- 5 ppmTransmit Duty Cycle 100%Emissions Mask & Spurious and Harmonic Output Per FCC CFR 47 Part 15.407b3Channel Frequency Selection Software-controlled Automatic Tx Power Control (ATPC) Maintains a constant Carrier-to-Noise Ratio at both ends of a link, operator enabled ON or OFFTransmitter Attenuation Range 0-30.0 dB in 1 dB steps, and Mute 40 dB, operator controlledReceiver Type Double HeterodyneError Correction FEC Reed Solomon DecodingSensitivity at 10-6 BER -78 dBm state guaranteedTypical Unfaded BER 10-10Frequency Stability +/- 5 ppmChannel Frequency Selection Software-controlled
Technical Specifications 95Maximum Receive Level without Receiver Degradation -35 dBmMaximum Receive Level without Receiver Damage -30 dBmDS-3 InterfaceType Full-duplex DS-3, per Bellcore GR-499-CORELine Rate 44.736 MbpsLine Code B3ZSTx and Rx Electrical Interfaces 75 Ohm unbalancedTx and Rx Physical Connectors Female TNC coaxial with grounded outer conductorEthernet InterfacesNumber Two, with independent transmit and receive pair sensingType Full-duplex 10/100 Base-T per IEEE 802.3Line Rate 45 MbpsMax Distance between CPE and Link CX 100 m (328 ft.)Electrical Interfaces 100 Ohm UTPPhysical Connectors Female four-pin CircularExternal Antenna to Link CX Antenna Port (Optional)Connector Type 50 Ohm Coaxial N-Type FemaleAntenna Port Return Loss >=12 dBOther InterfacesCraft Port Male four-pin Circular, RS-232 asynchronous data port (TXD, RXD, GND)RSSI Female BNC, DC voltage level proportionate to Received Signal StrengthPower RequirementsDC Source +/-21 to +/-60VDCPower Consumption 30 watts nominalUndervoltage Protection Circuit > +/- 18 VDC to power up the Link CXPhysical Connector Male four-pin CircularTable A2-2 Link CX-DSX DS-3 or Ethernet Version (5.8 GHz) (continued)
96 Link CX User Manual, Version AEnvironmentalAmbient Temperature Range•Operational•Storage-33 to +60°C (-27 to +140°F)-40 to +85°C (-40 to +185°F)Relative Humidity•Operational•Storage100%, all weather protection95%, noncondensingAltitude•Operational•Storage15,000 ft. AMSL (4,500m)50,000 ft. AMSL (15,000m)MechanicalHeight (HxWxD)•With External Antenna•With Integral Connector30 x 30 x 10 cm (12 x 12 x 4 in.)30 x 30 x 10.6 cm (12 x 12 x 4.25 in.)Weight•With Integral Antenna•With External Antenna Connector(TBD) kg ( lb.); Shipping Weight: kg ( lb.)(TBD) kg ( lb.); Shipping Weight: kg ( lb.)Table A2-2 Link CX-DSX DS-3 or Ethernet Version (5.8 GHz) (continued)
Technical Specifications 97A2-2 Factory-Supplied AntennasThis chapter describes specifications for the integral Link CX antenna, and the three factory-supplied antennas. Specifications for customer-supplied antennas are to be supplied by the antenna manufacturer.Table A2-3 5.3 GHz and 5.8 GHz Integral Flat Panel AntennaSize 30 x 30 x 1.9 cm (12 x 12 x 0.75 in.)Mounting Permanently attached to the Link CX radio; Gasketed to prevent moisture intrusionPolarization Horizontal or vertical, depending on Link CX mounting positionForward Gain 21 dBiFront/Back Ratio 30 dBBeam Width 12°Elevation Adjustment ± 15°Azimuth Adjustment 360°Mounting Bracket Pole Capacity•Single Link CX•Dual Link CX4.43 - 11.4 cm (1.75 - 4.5 in.)4.43 - 11.4 cm (1.75 - 4.5 in.)
98 Link CX User Manual, Version ATable A2-4 61 cm (2 ft.) 5.8 GHz Parabolic Antenna (Note)Size 61 cm (2 ft.) round parabolic with integral radomeMounting Independent mountingPolarization Horizontal or vertical, depending on mounting positionForward Gain 28.1 dBiFront/Back Ratio 38 dBBeam Width 6°Elevation Adjustment ± 15°Azimuth Adjustment 360°Mounting Bracket Pole Capacity 4.43 - 11.4 cm (1.75 - 4.5 in.)Connector to Link CX Coaxial 50 Ohm Female N-Type Factory-Supplied Coaxial Cable to Link CX 2 m (6.6 ft.) N-Type Male to N-Type MaleNote: This antenna is not FCC certified for use with the 5.3 GHz Link CX.Table A2-5 122 cm (4 ft.) 5.8 GHz Parabolic Antenna (Note)Size 122 cm (4 ft.) round parabolic with integral radomeMounting Independent mountingPolarization Horizontal or vertical, depending on mounting positionForward Gain 34 dBiFront/Back Ratio 46 dBBeam Width (TBD) °Elevation Adjustment ± 15°Azimuth Adjustment 360°Mounting Bracket Pole Capacity 4.43 - 11.4 cm (1.75 - 4.5 in.)Connector to Link CX Coaxial 50 Ohm Female N-Type Factory-Supplied Coaxial Cable to Link CX 2 m (6.6 ft.) N-Type Male to N-Type MaleNote: This antenna is not FCC certified for use with the 5.3 GHz Link CX.
Using the Web-Based GUI User Interface 99Appendix 3Using the Web-Based GUI User Interface 30000 The Link CX includes its own HTML-based installation, operation and test Web pages, which can be accessed locally using a Web browser on a Craft PC, or remotely using any Web browser on the same network as the Link CX. The rest of this Appendix includes information on: •Section A3-1, Web Browser Requirements•Section A3-2, Connecting A Web Browser•Section A3-3, Accessing the Link CX Web Pages•Section A3-4, Link CX Web PagesA3-1 Web Browser RequirementsThe Web browser used to install, operate, and maintain the Link CX must have an HTML-enabled interface.A3-2 Connecting A Web BrowserYou must connect your Web browser to the Link CX; either locally using a Craft PC, or remotely using any Web browser on the same Ethernet network as the Link CX. The web browser platform must have an Ethernet adapter for connecting to the Link CX directly, or to the Link CX though other Ethernet equipment. A3-3 Accessing the Link CX Web PagesOnce your Web browser is connected to the Link CX as described in Section A3-2, you can access and move through the configuration and maintenance pages as you would any other Web site. The rest of this paragraph will describe how to access the Link CX Web pages.A3-4 Link CX Web PagesThe following figures show the Link CX Web pages, and Chapter Four through Chapter Seven describe how to use the Link CX Web pages to configure, install, and maintain the Link CX.Following each figure will be a table describing individual parameter defaults and definitions.
100 Link CX User Manual, Version AThere may be a password required to access the Web pages, if enabled by the owner. (To Be Determined)Figure A3-1 Link CX Welcome Web Page
Using the Web-Based GUI User Interface 101Figure A3-2 Link CX Monitor Web Page
102 Link CX User Manual, Version AFigure A3-3 Link CX Commission Radio Web Page
Using the Web-Based GUI User Interface 103Figure A3-4 Link CX Commission Manager Web Page
104 Link CX User Manual, Version AFigure A3-5 Link CX Test Web Page
Using the Web-Based GUI User Interface 105Figure A3-6 Link CX Update Software Web Page
106 Link CX User Manual, Version A(this page intentionally left blank)
Grounding and Lightning Protection 107Appendix 4Grounding and Lightning Protection 40000 This appendix explains how to properly set up the Link CX radio and associated antenna for grounding and lightning protection. It contains the following sections:•Section A4-1, Overview•Section A4-2, Grounding•Section A4-3, Lightning Protection•Section A4-4, BibliographyA4-1 OverviewWhen used in telecommunications, good grounding practices have some direct benefits that can help users maximize system uptime as well as ensure the safety of those people working on the system. Among these benefits are:•Protection of personnel from electric shock and fire hazards•Reduction of radiated and conducted electromagnetic susceptibility•Improved system tolerance to discharge of electrostatic energy and lightning interference•Minimized service interruptions and service damageNo practice or formula can completely eliminate the above risks, but interWAVE believes that good grounding and bonding practices can significantly reduce the risk of many of these hazards. This appendix includes a bibliography that contains several publications that are readily available and provide detailed information on many aspects of grounding systems and their design, implementation, measurement, and maintenance.Please note that every telecommunication site is unique and must be evaluated accordingly. The following information is provided for generic reference and educational purposes only. The grounding plans and practices for a given site should be established and implemented only by trained profes-sionals, working in accordance with local practices and regulations.interWAVE strongly recommends that you install a Transtector Lightning Arrestor or equivalent at the cable entry to the Ethernet, Power, and/or DS-3 equipment structure.
108 Link CX User Manual, Version AA4-2 GroundingA4-2.1 Making a Grounding PlanA grounding plan should be developed at the outset of site design to provide the best grounding procedures and to minimize ground loop currents. Grounding should be achieved by connecting the outer conductors of the cables through a large-section copper strap to a central grounding point, and the size of the conductor should be increased as each branch path is added. The final conductor should be connected directly to the grounding system. For a radio site, a single copper grounding rod is insuf-ficient, because its impedance is likely to be too high.A4-2.2 Grounding Antenna FeedersAll antenna feeders should be bonded to the tower at the upper and lower ends and grounded at the point of entry into the building. Weatherproof grounding kits are available from antenna manufacturers.A4-2.3 Grounding BuildingsIdeally, a ground ring should surround the building and be connected to individual grounds associated with feeder entry, antenna support structure, the building lightning conductor, the equipment room, the main AC supply, and other facilities. Each connection should be made by the most direct route to minimize interaction between the different grounding functions.The ground ring should consist of copper cable or tape with electrodes two meters or longer, buried to a depth of 0.6 m and at a distance from the building not to exceed 1 m.Buildings may require lightning rods if they are not within the zone of another protected structure.To construct a good ground, ground rods should penetrate the earth to a depth of about 2 m (6 feet). Where the ground is in rocky terrain, make sure that the ground rods penetrate into loose soil. In sandy soil, use more ground rods to make sure that the ground has sufficient contact with water-bearing material.Use 4 to 6 AWG wire to connect each ground rod to the equipment to be grounded. The cables should be free of sharp bends. Each ground cable should be at least 2 m in length with at least 1 m separation between each. Refer to local and national electrical codes to determine acceptable grounding methods.The Link CX chassis should be directly connected to ground to ensure that it functions correctly.In most cases, following the local code requirements for grounding and lightning protection will be adequate.Many of the cables used by interWAVE have braided rather than solid outer conductors; this type of grounding is not appropriate. In these cases surge arrestors approved by interWAVE should be used. For information on surge arrestors, please contact the interWAVE Customer Support department.
Grounding and Lightning Protection 109A4-3 Lightning ProtectionRadio sites can be particularly prone to lightning strikes by virtue of their normally exposed locations and the presence of relatively tall antenna support structures.Reference should also be made to various publications, some of which are listed in the bibliography. Any site owner or user in doubt about the protection requirements for a particular location should contact the appropriate authority.A4-3.1 PurposesThe purposes of any protection arrangement should be to:•Provide a suitable path to ground for the lightning current.•Ensure adequate bonding between structures and all metalwork on the site and the common grounding system in order to reduce side flashing.•Prevent the entry of flashes or surges into the building.The resistance to ground should be kept to a minimum; a value of less than 10 Ohms is recommended. Ideally, and most important, the system should be at equal potential across the entire site.Certain authorities and service providers have their own particular practices that have to be followed where applicable.Protection arrangements vary considerably, from very simple sites to complicated sites with multiple buildings, antenna support structures, and associated equipment. Ensuring adequate protection may also involve integration with and upgrading of existing systems. A4-3.2 Lightning ConductorsDown conductors, bonding interconnections, ground rings, and radial tapes should be of uninsulated 000 AWG copper cable or solid copper tape with a minimum cross section of 25 mm by 3 mm, with all connections protected by nonreactive paste. Protected test points should be included if appropriate, and sacrificial ground lugs should be clearly marked and easily accessible for periodic inspection.A4-3.3 Grounding Antenna Support StructuresA structure generally acts as its own lightning conductor and, therefore, does not require an additional conductor from the top to the base. A lightning rod may be required to extend the zone of protection to equipment mounted on the top of the structure. The lightning rod should extend 2.5 m above the highest equipment.It is not possible to provide and guarantee complete protection from the effects of lightning; however, risks of this sort can be significantly reduced by careful attention to grounding, protection devices, and the layout of the site itself.
110 Link CX User Manual, Version AGround-mounted support structures should be connected at their base to a ground ring through sacrificial ground lugs. Towers should have a connection from each leg.A ground ring should consist of copper cable or solid copper tape, with ground rods equally spaced at 2-m intervals around the base of the structure as close to it as possible. The ground ring is buried approximately 0.6 m deep where soil conditions allow. An alternative method using radials rather than rings is detailed in The “Grounds” for Lightning and EMP Protection, published by PolyPhaser Corporation.The ground ring should be connected to the main building ground by the most direct route, and should be buried as appropriate.Roof-mounted structures should be connected to the main building ground by the most direct route, using sacrificial lugs and copper cable or tape as appropriate. Tower guy wires should be directly bonded at their lowest point to a suitable ground electrode or connected to the site ground by the most direct route.A4-4 BibliographyITU - T K.40Protection against LEMP in telecommunications centresITU - T K.27Bonding configurations and earthing inside a telecommunication buildingITU - T K.35Bonding configurations and earthing at remote electronic sitesITU - T K.39Risk assessment of damages to telecommunications sites due to lightning dischargesITU - T Lightning HandbookThe protection of telecommunication lines and equipment against lightning dischargesIEEE Emerald BookPowering and GroundingThe “Grounds” for Lightning and EMP Protection, second editionPublished by PolyPhaser Corporation
Enterprise MIBs and Traps 111Appendix 5Enterprise MIBs and Traps 50000This appendix contains information about the three different sets of Link CX Management Information Bases (MIBs), their current listings, and where to find the most current versions.A5-1 Enterprise MIBA5-1.1 OverviewThe Link CX Enterprise MIB consists of the following groups of objects:•link_cx_identity group: Model, revision, serial numbers, and channel frequency table. Configured in the factory. Read-only by the customer.•link_cx_configuration group: Channel number and other read-write parameters that the customer chooses. This group is the system’s persistent state. It is preserved across reboots.•link_cx_status group: Performance and alarm status, read-only. Not preserved across reboots.•link_cx_test group: BERT, loopback, and other temporary state that the customer might use in a test procedure. Read-write. Not preserved across reboots.•link_cx_reboot group: Identifies the software versions that are available and controls reboot.•link_cx_trap group: There is only one trap-related variable, trapSentCounter. It is not preserved across reboots.A5-1.2 DetailsWN_LINK_CX-MIB DEFINITIONS ::= BEGINIMPORTSenterprises, CounterFROM RFC1155-SMIOBJECT-TYPEFROM RFC-1212;interWAVE OBJECT IDENTIFIER ::= { enterprises 792 }wavenet_link_cx OBJECT IDENTIFIER ::= { interWAVE 5 }link_cx_identity OBJECT IDENTIFIER ::= { wavenet_link_cx 1 }link_cx_configuration OBJECT IDENTIFIER ::= { wavenet_link_cx 2}link_cx_status OBJECT IDENTIFIER ::= { wavenet_link_cx 3}link_cx_test OBJECT IDENTIFIER ::= { wavenet_link_cx 4}
112 Link CX User Manual, Version Alink_cx_reboot OBJECT IDENTIFIER ::= { wavenet_link_cx 5}link_cx_trap OBJECT IDENTIFIER ::= { wavenet_link_cx 6}-- link_cx_identity groupunitModelNumber OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The model number of the unit as a whole."::= { link_cx_identity 1}unitRevisionNumber OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The revision number of the unit as a whole."::= { link_cx_identity 2}unitSerialNumber OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The serial number of the unit as a whole."::= { link_cx_identity 3}boardModelNumber OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The model number of the PCB board assembly."::= { link_cx_identity 4}boardRevisionNumber OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The revision number of the PCB board assembly."::= { link_cx_identity 5}boardSerialNumber OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The serial number of the PCB board assembly."::= { link_cx_identity 6}
Enterprise MIBs and Traps 113rfFrequencyTable OBJECT-TYPESYNTAX SEQUENCE OF RfChannelFreqEntryACCESS not-accessibleSTATUS mandatoryDESCRIPTION"The table of 2 selectable Tx/Rx frequency channel pairs, in MHz. Thereceive frequency on a Tx-high unit is lower than the transmit frequencyby the amount of the Tx/Rx separation. Conversely, the receive frequencyon a Tx-low unit is higher than the transmit frequency by the amount ofthe Tx/Rx separation."::= { link_cx_identity 7}rfFrequencyEntry OBJECT-TYPESYNTAX RfFrequencyEntryACCESS not-accessibleSTATUS mandatoryDESCRIPTION"Channel frequency entry."INDEX { rfChannelIndex}::= { rfFrequencyTable 1}RfFrequencyEntry ::=SEQUENCE {rfChannelIndexINTEGER,rfTxFrequencyINTEGER,rfRxFrequencyINTEGER}rfChannelIndex OBJECT-TYPESYNTAX INTEGER (1..2)ACCESS read-onlySTATUS mandatoryDESCRIPTION"The RF channel number."::= { rfFrequencyEntry 1}rfTxFrequency OBJECT-TYPESYNTAX INTEGERACCESS read-onlySTATUS mandatoryDESCRIPTION"The transmit frequency in MHz."::= { rfFrequencyEntry 2}rfRxFrequency OBJECT-TYPESYNTAX INTEGERACCESS read-onlySTATUS mandatory
114 Link CX User Manual, Version ADESCRIPTION"The receive frequency in MHz."::= { rfFrequencyEntry 3}-- link_cx_configuration grouprfTxAttenuateControl OBJECT-TYPESYNTAX INTEGER {enabled(1),disabled(2)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"If enabled, attenuates the transmit output level by 40 dB."::= }link_cx_configuration 1}rfAtpcControl OBJECT-TYPESYNTAX INTEGER {enabled(1),disabled(2)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"Automatic Tx Power Control mode can be enabled or disabled.If enabled, the two Link CX radios at opposite ends of theradio link send each other feedback messages that they useto adjust their Tx power down to the lowest level that isconsistent with good signal quality."::= }link_cx_configuration 2}rfTxPowerLimit OBJECT-TYPESYNTAX INTEGER (-14..16)ACCESS read-writeSTATUS mandatoryDESCRIPTION"Maximum transmit power level limit at the antenna port, in dBm.The Tx power limit can be set in 1 dB steps within the rangeof -14 dBm to +16 dBm. If Automatic Tx Power Control is enabledthe measured Tx power may be lower than this limit. If AutomaticTx Power Control is disabled the measured Tx power should beexactly the same as this target value."::= }link_cx_configuration 3}rfAtpcAddress OBJECT-TYPESYNTAX IpAddressACCESS read-writeSTATUS mandatoryDESCRIPTION"The IP Address of the peer radio with which this radio exchanges
Enterprise MIBs and Traps 115Automatic Tx Power Control information."::= }link_cx_configuration 4}rfChannel OBJECT-TYPESYNTAX INTEGER (1..2)ACCESS read-writeSTATUS mandatoryDESCRIPTION"The current transmit channel of the local unit. The transmitfrequency in MHz for each channel can be read in the rfFrequencyTable."::= }link_cx_configuration 5}rfRssiAlarmThresholdSetting OBJECT-TYPESYNTAX INTEGER (-80..-40)ACCESS read-writeSTATUS mandatoryDESCRIPTION"A RSSI Alarm will be generated if the level of RSSI goes belowthe set threshold. The threshold can be set in 1 dB stepswithin the range of -80 to -40 dBm."::= }link_cx_configuration 6}ds3LosAlarmControl OBJECT-TYPESYNTAX INTEGER { enabled(1), disabled(2)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"DS3 LOS alarm control. When enabled, the alarm will be generated.When disabled, the alarm will not be generated even ifLOS condition is detected."::= }link_cx_configuration 7}-- link_cx_status grouprfPowerOutputLevel OBJECT-TYPESYNTAX INTEGERACCESS read-onlySTATUS mandatoryDESCRIPTION"The measured radio Tx power level in dBm."::= }link_cx_status 1}rfRssiLevel OBJECT-TYPESYNTAX INTEGERACCESS read-onlySTATUS mandatoryDESCRIPTION"The measured RSSI of the active channel in dBm. -110 dBm
116 Link CX User Manual, Version Aindicates the receive signal level is below the detection level."::= }link_cx_status 2}bitErrorRate OBJECT-TYPESYNTAX INTEGERACCESS read-onlySTATUS mandatoryDESCRIPTION"The estimated bit error rate (BER), in errors per 10^8 bits.A returned value of 0 indicates zero bit errors in 10^8 bits.A returned value of 1 indicates an estimated BER of 1x10^-8.A returned value of 10 indicates an estimated BER of 1x10^-7,and so on."::= }link_cx_status 3}losAlarmStatus OBJECT-TYPE -- DS3 interface alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"A value of 1 indicates a DS3 connection is present.A value of 2 indicates the DS3 connection has been lost.If ds3LosAlarmControl = disabled, losAlarmStatus willalways be normal."::= }link_cx_status 4}txSynthLockAlarmStatus OBJECT-TYPE -- local alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"The Tx synthesizer lock status. A value of 1 indicates the Tx synthesizer is locked.A value of 2 indicates the Tx synthesizer is unlocked"::= }link_cx_status 5}rxSynthLockAlarmStatus OBJECT-TYPE -- local alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"The Rx synthesizer lock status.
Enterprise MIBs and Traps 117A value of 1 indicates the Rx synthesizer is locked.A value of 2 indicates the Rx synthesizer is unlocked"::= }link_cx_status 6}lowTxPowerAlarmStatus OBJECT-TYPE -- local alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"A value of 1 indicates the Tx power at the antenna portis greater than or equal to -14 dBm. A value of 2 indicatesthe Tx power at the antenna port is less than -14 dBm."::= }link_cx_status 7}demodLockAlarmStatus OBJECT-TYPE -- link alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"The demodulator lock status.A value of 1 indicates the demodulator is locked.A value of 2 indicates the demodulator is unlocked"::= }link_cx_status 8}lowRssiLevelAlarmStatus OBJECT-TYPE -- link alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"A RSSI alarm will be generated if the level of RSSI goes belowthe user configured RSSI alarm level, rfRssiAlarmThresholdSetting.A value of 1 indicates the received signal level is above the RSSIalarm threshold. A value of 2 indicates the received signal levelis at or below the user configured RSSI alarm level.This alarm is valid only if the Rx synthesizer is locked."::= }link_cx_status 9}receiverOverloadAlarmStatus OBJECT-TYPE -- link alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}
118 Link CX User Manual, Version AACCESS read-onlySTATUS mandatoryDESCRIPTION"A receiver overload alarm will be generated if the levelof RSSI is at or above -40 dBm. A value of 1 indicates thereceived signal level is below -40 dBm. A value of 2 indicatesthe received signal level is at or above -40 dBm.This alarm is only valid if the Rx synthesizer is locked."::= }link_cx_status 10}bitErrorRateAlarmStatus OBJECT-TYPE -- link alarm conditionSYNTAX INTEGER { normal(1), alarm(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"A bit error rate alarm will be generated if the levelof BER is at or above 10^-3, i.e. if bitErrorRate isequal to or greater than 100000."::= }link_cx_status 11}-- link_cx_test grouprfTxAttenuateTimer OBJECT-TYPESYNTAX INTEGER (0..1800)ACCESS read-writeSTATUS mandatoryDESCRIPTION"To temporarily enable Tx attenuation by 40 dB, write the number ofseconds to this timer. When the timer counts down to 0, Tx attenuationwill return to its normal unattenuated state. Writing to this timerhas no effect if rfTxAttenuateControl is set to enable because inthat case the transmitter is already attenuated."::= }link_cx_test 1}ds3LocalLoopbackControl OBJECT-TYPESYNTAX INTEGER { enabled(1), disabled(2)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"The DS3 local loopback control. When enabled, DS3 data on thelocal interface is looped back through the local interface.When disabled, DS3 data on the local interface is sent overthe radio link to the remote unit."::= }link_cx_test 2}
Enterprise MIBs and Traps 119rfLocalLoopbackTimer OBJECT-TYPESYNTAX INTEGER (0..1800)ACCESS read-writeSTATUS mandatoryDESCRIPTION"When this value is greater than zero, the radio is in the localloopback mode. The RF transmit signal on the local unit isconverted to the receive frequency of the local unit so it canbe received by the local unit, for the chosen period of time inseconds. When this timer counts down to 0 the unit reverts tonormal operation in which the RF transmit signal on the local unitis transmitted over the radio link to the remote unit. The durationis selectable in 1 second intervals from 0 seconds to a maximum of1800 seconds."::= }link_cx_test 3}ds3RemoteLoopbackControl OBJECT-TYPESYNTAX INTEGER { enabled(1), disabled(2)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"The DS3 remote loopback control. When enabled, DS3 data on the remoteinterface is looped back through the remote interface. When disabled,DS3 data on the remote interface is sent over the radio link to thelocal unit."::= }link_cx_test 4}ds3BerTestControl OBJECT-TYPESYNTAX INTEGER { alternatingOnesZeros(1), allOnes(2), allZeros(3), disabled(4)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"BER test mode control. The BER test is enabled by selecting one ofthree different data patterns. The patterns are:(1) alternating 1’s and 0’s, (2) all 1’s, and (3) all 0’s.The BER test is disabled by setting the BER test control to 4."::= }link_cx_test 5}pseudoAisControl OBJECT-TYPESYNTAX INTEGER { enabled(1), disabled(2)}
120 Link CX User Manual, Version AACCESS read-writeSTATUS mandatoryDESCRIPTION"When enabled, pseudo-AIS (constant mark or all ones at the DS3interface) will be generated."::= }link_cx_test 6}-- link_cx_reboot groupsoftwareVersionBank1 OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The software version in bank one."::= }link_cx_reboot 1}softwareVersionBank2 OBJECT-TYPESYNTAX DisplayString (SIZE (0..15))ACCESS read-onlySTATUS mandatoryDESCRIPTION"The software version in bank two."::= }link_cx_reboot 2}bootedUsingBankNumber OBJECT-TYPESYNTAX INTEGER {bankOne(1),bankTwo(2)}ACCESS read-onlySTATUS mandatoryDESCRIPTION"The software bank from which the unit booted."::= }link_cx_reboot 3}bootUsingBankNumber OBJECT-TYPESYNTAX INTEGER {bankOne(1),bankTwo(2)}ACCESS read-writeSTATUS mandatoryDESCRIPTION"Selects the software bank and causes reboot."::= }link_cx_reboot 4}-- trapstrapSentCounter OBJECT-TYPESYNTAX Counter
Enterprise MIBs and Traps 121ACCESS read-onlySTATUS mandatoryDESCRIPTION"Total number of enterprise traps sent since last reboot."::= }link_cx_trap 1}link_cx_unit OBJECT IDENTIFIER ::= }wavenet_link_cx 101}alarmTrap TRAP-TYPEENTERPRISE link_cx_unitVARIABLES }rfPowerOutputLevel, rfRssiLevel, bitErrorRate, losAlarmStatus, txSynthLockAlarmStatus, rxSynthLockAlarmStatus, lowTxPowerAlarmStatus, demodLockAlarmStatus, lowRssiLevelAlarmStatus, receiverOverloadAlarmStatus, bitErrorRateAlarmStatus, trapSentCounter}DESCRIPTION"A trap that indicates a change in one or more of the alarm conditions."::= 1configurationChangeTrap TRAP-TYPEENTERPRISE link_cx_unitVARIABLES }rfTxAttenuateControl, rfAtpcControl, rfTxPowerLimit, rfAtpcAddress, rfChannel, rfRssiAlarmThresholdSetting, ds3LosAlarmControl, trapSentCounter}DESCRIPTION"A trap that indicates a configuration change."::= 2unitTestTrap TRAP-TYPEENTERPRISE link_cx_unitVARIABLES }rfTxAttenuateTimer, ds3LocalLoopbackControl, rfLocalLoopbackTimer, ds3RemoteLoopbackControl, ds3BerTestControl,| pseudoAisControl, trapSentCounter }DESCRIPTION"A trap that indicates the beginning or end of a test procedure.
122 Link CX User Manual, Version AAn alarmTrap trap might result from this procedure."::= 3ENDA5-2 Enterprise TrapsLink CX supports three enterpriseSpecific traps - alarmTrap, configurationChangeTrap, and unitTest-Trap. Each of these traps contains all the relevant variables for that particular trap, in order to minimize polling. One variable that is in each of the traps is a counter, so that the network management application can detect loss of traps.A5-2.1 alarmTrapLink CX sends this trap when any of the alarm variables changes, either going into or out of an alarm condition. All of the relevant alarm conditions and performance data are contained in the trap PDU, along with a counter of enterprise traps sent. The variables include:•trap counter•DS3 LOS status (DS3 input absent/present)•Tx Power status (under/over minimum power)•Tx Synthesizer lock status (unlocked/locked)•Rx Synthesizer lock status (unlocked/locked)•RSSI level status (under minimum level)•Rx overload status (over maximum level)•BER status (over threshold)•demodulator lock status (unlocked/locked)•BER•RSSI•Tx PowerA5-2.2 configurationChangeTrapLink CX sends this trap when the persistent state of the Link CX changes. This trap alerts the network management application that it must refresh its database. If all management is through SNMP exclusively, this trap is redundant. If on the other hand, management is a mixture of HTTP and SNMP this will keep the SNMP side completely consistent. All the relevant persistent state variables are contained in the trap PDU, along with the trap counter. The variables include:•trap counter•Tx control (attenuated/unattenuated)•ATPC control (ATPC enabled/disabled)
Enterprise MIBs and Traps 123•Tx power setting•ATPC peer IP address (IP address of the CX at the other end of the radio link)•channel number•RSSI alarm threshold•DS3 LOS control (enable/disable alarm for LOS)A5-2.3 unitTestTrapLink CX sends this trap when any of the test variables change, either at the start or at completion of a test. All the test state variables are contained in the trap PDU, along with the trap counter. This trap alerts the management application that a change has taken place that will probably result in an alarmTrap before too long (in case it doesn’t already know, and in case it wants to distinguish between this case and spontaneous alarmTraps). The state variables in the trap PDU include:•trap counter•DS3 local loopback•DS3 remote loopback•radio loopback•pseudoAIS•BERT•temporary Tx attenuation
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Index 125Index 60000Aantennasgrounding antenna feeders 108grounding support structures 108Bbeam clearanceenvelope at midpath 26Eerror messagesmonitoring 84Ggroundingantenna feeders 108buildings 108lightning, see lightning protectionIinterWAVEreturn materials authorization (RMA) xivsales operations xivtraining xivITU bibliography 110Llightning protectiongrounding antenna support structures 109importance of 109lightning conductors 109purposes 109Link CXoverview 1
126 Link CX User Manual, Version AMmessagesSNMP monitoring error 84monitoring and trend analysiserror messages and traps 84Web browser interfaceSNMP network management stations 83Nnetwork management stations, see SNMPRreturn materials authorization (RMA) xivRMA xivSsales operations xivSNMPalarm messages 84network management stations 83traps 84TThe "Grounds" for Lightning and EMP Protection 110training xivtraps, SNMP 84Troubleshooting 85
NotesNotes:
Part Number 100757-0015/02 Version A* * * * * * * * * * * * * * * * * * This is the last page of this document.This notice complies with ISO9001 requirements and ensures the reader is working from a complete document.* * * * * * * * * * * * * * * * * *interWAVE Communications, Inc.312 Constitution DriveMenlo Park, CA, USA 94025Phone: 1.650.838.2000www.iwv.com

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